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Space/Astronomy: Most Popular Articles

These articles are the most popular over the last month.
Did You Know There Are 7 Different Types of...
When we think of stars we usually imagine our Sun. But the simple fact is that the Universe is made up of many different types of stars. In fact looking into the heavens most stars look very different, and some aren't really stars at all. So here is a run down of the most common types of stars in the galaxy.
10 Brightest Stars in the Milky Way Galaxy
Stars are massive shining spheres of hot gas, the closest of which is our Sun. Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars (oxygen, carbon, neon, and nitrogen) are only present in very small quantities. Those stars which you see with your naked eye in the night sky all belong to the Milky Way Galaxy, the huge system of stars that contains our solar system.
Top 10 Largest Stars in the Universe
Stars are immense balls of glowing plasma. Our Sun provides all the light and heat necessary for life to exist on Earth. And while the Sun is large in comparison to Earth, it is absolutely dwarfed by some of the stars that exist outside of our solar system. Following is a list of the 10 largest stars known in our Universe.
What Exactly Is a Moon?
What is a moon? It's a simple question that may, on the surface, have an obvious answer. One has to do little more than look up in the night sky on clear evenings to see an example of such an object. But when it comes to defining these magnificent objects, the answer may not be so clear.
10 Incredible (and Strange!) Astronomy Facts
Even though man has studied the heavens for thousands of years, we still know very little about the Universe we live in. And as we continue to learn more, we are consistently amazed, and sometimes confused, by what we learn. Here is a collection of amazing, interesting, and strange facts about our Universe.
Constellations Pictures Gallery
Constellations information. Discover more about each of the 88 modern constellations. Find the names, information, and pictures of the 88 constellations.
Challenger Explosion - A NASA Tragedy
When the Challenger explosion occurred, it shocked the nation, started a NASA investigation, and led to many changes in the shuttle program.
The Big Bang Theory Explained
It was only recently discoverd that the Universe even had a beginning. Now, scientists are trying to solve the mysteries of the early Universe. The leading theory to explain how the Universe came into existence is known as the Big Bang theory. However, there are still many things that the Big Bang theory struggles to explain.
Basic Information about the Sun
The Sun provides energy for life to exist on Earth as well as the gravitational force to keep the planets in orbit. Here you will find basic information.
10 Things Everyone Should Know About Earth
Earth, our home planet, is the only planet whose name is not derived from Greek/Roman mythology. In Roman Mythology, the goddess of the Earth was Tellus - the fertile soil, while the Greek goddes was Gaia, terra mater - Mother Earth. The name we use today, Earth, comes from Old English and Germanic.
Everything You Need to Know About Venus, the...
Venus, the second planet from the Sun, is often referred to as Earth's Sister. While similar in size to Earth, the atmosphere is vastly different.
Discover the 10 Closest Stars to Earth
You can see thousands of stars when you look up at night. Here are the Top 10 Closest Stars to our solar system.
Astronomy 101: Introduction to the Basics
Astronomy 101 - This basic Astronomy course was designed for those who have an interest in but little education in astronomy. Learn the basics of astronomy here.
10 Surprising Facts You Should Know About the Sun
Our Sun has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. Our Sun is actually the closest star to Earth. The Sun is a massive shining sphere of hot gas. The connection and interaction between the Sun and the Earth drive the seasons, currents in the ocean, weather, and climate.
Solar System Tour - Visit Our Galactic...
Astronomy Solar System Tour, an Astronomy Guide to Space exploration close to home. Discover information on planets in our solar system. Find pictures of objects in our solar system. Learn more about our galactic neighborhood, our solar system.
10 Basic Facts About Uranus
Uranus is one of the most interesting objects in the night sky, and is absolutely beautiful to view through a telescope. Here we take a look at the top 10 most interesting facts about Uranus.
How Did Neil Armstrong Become the First Man on...
It was July 20, 1969 when Neil Armstrong spoke what must be considered the most famous words of the 20th century,
How is "Uranus" Pronounced?
The planet Uranus is one of the most beautiful objects in the night sky, especially as viewed through a telescope. Discussion of this object is often met with snickers and laughter because of how it is pronounced. But do people pronounce it correctly, or should it be said a different way?
10 Things You Need to Know About Mars
Named for the Roman god of War, Mars probably got this name due to its red color. It is sometimes referred to as the Red Planet. The name of the month March derives from Mars.
Why Time Travel May Actually Be Possible
There have been times when I wish that I could revisit the past. Perhaps to undo a mistake, or to visit a hero of history. Time travel is an often used plot device in many science fiction works, but is there any science behind it? Is it possible to time travel into the past?
United States Astronomy Schools - Colleges and...
Guide to colleges and universities in the United States with astronomy degree programs. Learn where you can earn a degree in astronomy or physics with an astronomy track.
Space Shuttle Challenger Disaster - A NASA...
The Space Shuttle Challenger disaster, a NASA tragedy. When the space shuttle Challenger exploded killing all aboard, it shocked the nation, started a NASA investigation, and led to many changes in the space shuttle program. Page 2.
The Untold Story of the Teacher Who Died on the...
On January 28, 1986, the world lost one of its greatest resources, Christa McAuliffe, the space shuttle Challenger astronaut teacher.
Is Sex in Space Possible?
It may sound taboo, but one of the most popular questions fielded by astronauts posits the idea of sex in space. Many wonder if it is even possible. Some argue that it must have happened by now, what with all the coed crews journeying to the International Space Station. So is sex in space possible? And, more interestingly, has sex in space ever happened?
What Are the 10 Closest Stars to Earth?
Naturally our Sun is the closest star to Earth. But beyond that most stars seem impossibly far away. But how close are our nearest neighbors. Here we take a look at the ten closest star systems to Earth.
An Introduction to the Pioneers and Branches of...
Astronomy, derived from the Greek words for star law, is the scientific study of all objects beyond our world, and the process by which we seek to understand the physical laws and origins of our universe.
How Dr. Mae Jemison Became the First African-Am...
Dr. Mae Jemison was the first African-American female astronaut in Space. Read her brief biography.
Free Sky Maps - Cities Around The World
You can view free sky maps as seen from various cities around the globe. Your Guide offers this online planetarium which gives you three ways to view the sky and produce free sky maps.
Should Pluto Be a Planet? Why the Debate...
In 2006 the International Astronomical Union stripped Pluto of its planet-hood, demoting it to dwarf planet status. But the debate has raged on ever since. So should Pluto be a planet, and in the end does it even matter?
10 Things You May Not Know About Mercury
Named after the Roman god of commerce, travel and thievery, Mercury is the second smallest planet in the solar system, larger only than Pluto, the most distant planet in our solar system. If Earth were the size of a baseball, Mercury would be the size of a golf ball. Viewed from Mercury, the Sun would look almost three times as large as it does from Earth.
Can You Name the Brightest Star in the Sky?
Sirius, also known as the Dog Star, is the brightest star in the sky. It is also the sixth closest star to Earth. Its name comes from the Greek word for scorching. At 8.6 light years, it is also one of the closest stars to our own sun. In 1844, F.W. Bessel used analysis of its motion to determine that it had a companion. This companion was confirmed by observations in 1862 and is now known to be a white dwarf.
Early History of Astronomy: Ancient Astronomers...
Early History of Astronomy. The study of our Universe is not new, the history of astronomy shows it to be the oldest science. People have been looking up, trying to explain the universe for as long as there have been people. Here, in lesson 1, we look at the early history of astronomy. We’ll look at ancient astronomers and their contributions to the history of astronomy.
6 Things to Know Before Buying a Telescope
So, you want to know how to buy a telescope. Being a knowledgeable consumer is key Before you go shopping, learn as much as you can about telescopes. We will try to help you get started here, with the six things you need to know about how to buy a telescope.
Ronald E. McNair (Ph.D.)
Biography of Ronald E. McNair (Ph.D.) - NASA Astronaut (Deceased). Space Shuttle Challenger STS-51L Mission Specialist Ronald E. McNair
10 Interesting Facts About the Planet Venus
Venus whose Greek equivalent was Aphrodite was the Roman goddess of love and beauty. Venus probably got its name from being the brightest object in the sky except for the Sun and the Moon. Venus has always been considered a feminine planet, with many legends and stories concerning its inhabitants. Even one modern doctor says that women are from Venus.
What Are Black Holes?
A favorite phenomenon of science fiction writers, black holes are real objects that play an important role in our Universe. There are different types of black holes, arising from different processes. But they all have one thing in common, they are incredibly dense regions of space that have gravitational fields so strong that not even light can escape their grasp.
All About Guion 'Guy' Bluford, the First...
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Red Supergiant Stars
The largest stars in the Universe are red supergiants. The creation and evolution of these behemoths is an active area of research among scientists. It is believed that high mass stars eventually evolve into supergiants once they leave the main sequence and that, eventually, they will brilliantly explode in a massive supernova.
Constellations Pictures - Andromeda - Picture...
Andromeda, daughter of Cepheus and Cassiopeia. - Genitive: Andromedae Abbreviations: And, Andr Right Ascension, (h): 1 Declination, (deg): 40N
Mercury - Thief In The Night - First Planet
Mercury - Pictures and Astronomy Facts - Solar System Planetary Astronomical Data and Images of Mercury. Mercury. Astronomy Guide to Space exploration close to home. Information on our solar system. Mercury planetary data and graphics.
More Songs About Space from Pop Music
Top ten rock - pop songs with a space theme including lyrics. These rock - pop songs including lyrics are all dedicated to the space age. Page 2.
Sound in Space
Is there sound in space? It's a common question, and the answer is often misrepresented in film and television (though producers are getting better at dealing with this issue). Recently, the question has become even more cloudy with the release of CDs from NASA that contain tracks of the different sounds in space. How can this be?
Pluto Picture - Pluto in True Color
Pluto is mostly brown. This picture captures the true colors of Pluto as well as the highest surface resolution so far recovered. No spacecraft has yet visited this most distant planet in our Solar System. The above map was created by tracking brightness changes from Earth of Pluto during times when it was being partially eclipsed by its moon Charon. The map therefore shows the hemisphere of Pluto that faces Charon. Page 8.
Constellations Pictures - Antlia - Picture of...
The Water Pump - Genitive: Antliae Abbreviations: Ant, Antl Right Ascension, (h): 10 Declination, (deg): 35S . Page 2.
Top 10 Quotes by Neil Armstrong, the First Man...
Neil Armstrong is unequivocally an American hero. His bravery and skill earned him the honor of the first human to ever set foot on the Moon. As a result Neil Armstrong has been looked to for insight into the human condition as well as commentary on the state of technology and space exploration. Here we look at the top ten Neil Armstrong quotes, to see how he has influenced our nation and world.
Astronomy and Space FAQs
Browse these Frequently Asked Questions About Space & Astronomy. Learn the answers to Astronomy Questions & Space Questions This feature of our Basics Series; What You Need To Know About Space provides answers to astronomy questions and space questions. Discover the answers to some frequently asked questions about space.
How Do We Stop Asteroids from Destroying Earth?
The threat of a large asteroid or comet colliding with Earth is very real. How will we stop the destruction of Earth? Is there a plan to combat the, potentially, greatest threat to life on Earth?
Interesting Facts About Saturn
Saturn is best known for its beautiful and distinctive rings. But this is just one of the amazing facts about the second largest planet in our solar system. So, join me as we run down the most interesting facts about Saturn.
Top 7 Telescopes for Kids
Everyone has to start somewhere. Star your kids off right with quality telescopes at good prices. Check here for some great reflectors and refractors. Less expensive telescopes.
11 Things About Jupiter You Probably Didn&rsquo...
Jupiter, the king of the planets, is the largest and heaviest of the planets in our solar system. Perhaps best known for the giant red storm on the surface, Jupiter has many features that may surprise people. So check out our list of the most interesting facts about Jupiter.
Earth - Our Home
Earth - Pictures and Astronomy Facts - Solar System Planetary Astronomical Data and Images of Earth. Earth. Astronomy Guide to Space exploration close to home. Information on our solar system. Earth planetary data and graphics.
Earth Pictures - Full Earth
View of the Earth as seen by the Apollo 17 crew traveling toward the Moon. This translunar coast photograph extends from the Mediterranean Sea area to the Antarctica South polar ice cap. This is the first time the Apollo trajectory made it possible to photograph the South polar ice cap. Note the heavy cloud cover in the Southern Hemisphere. Almost the entire coastline of Africa is clearly visible. . Page 12.
All About Benjamin Banneker, the First...
Benjamin Banneker was an African-American astronomer, clockmaker, & publisher who was instrumental in surveying the District of Columbia. Banneker taught himself astronomy & advanced mathematics. He turned his attention to both subjects. His study of astronomy enabled him to make the calculations to predict solar & lunar eclipses, even correctly contradicting experts of the day, & to compile an ephemeris for his Benjamin Banneker's Almanac. He became known as the Sable Astronomer.
What are Rotation and Revolution?
Rotation and revolution are vital to the study of astronomy, as virtually all heavenly bodies undergo some rotational dynamics of some sort. But what are rotation and revolution exactly, and how are they different?
NASA Discovers a New Planet In Our Solar System
Literally Planet X, especially if you use Roman numerals. NASA scientists have discovered a 10th planet in our solar system. The planet, larger than Pluto, was discovered using the Samuel Oschin Telescope at Palomar Observatory near San Diego, Calif. The discovery was announced today by planetary scientist Dr. Mike Brown of the California Institute of Technology in Pasadena, Calif., whose research is partly funded by NASA.
How Many Habitable Planets are in the Milky Way...
There are a vast number of stars in the Milky Way galaxy, and recent data suggests that many of them have planets orbiting around them. But how many of these would we expect to be fit for life, and how many of these will actually contain life? The answers are not so simple.
Was the Apollo 13 Space Exploration Mission...
Apollo 13 was the 3rd scheduled lunar launch, carrying Jim Lovell, Fred Haize, & Jack Swigert to the moon. An explosion occurred, endangering the Apollo 13 Lunar Landing mission & astronauts Jim Lovell, Fred Haize, & Jack Swigert, the Apollo 13 space exploration mission became a race for survival. As NASA experts & contractors struggled to come up with solutions, the Apollo 13 astronauts; Jim Lovell, Fred Haize, & Jack Swigert; struggled to survive. The successful failure of space exploration.
When Can We Expect to See Halley's Comet Next?
Using Newton's new Laws of motion, the astronomer, Edmond Halley, made a prediction in 1705. He stated that a comet which had appeared in 1531, 1607 and 1682 would reappear in 1758. Although he was proven to be correct, Halley did not live to see it. However, the comet was later named in his honor. During the 20th century, Halley's Comet appeared in 1910 and 1986. During that most recent visit, five spacecraft from the USSR, Japan, and the European Community journeyed to Comet Halley.
Could a Gamma-ray Burst Destroy Life on Earth?
Gamma-ray Bursts (GRBs) are the most powerful events in the Universe. Despite being far, far away in distant galaxies, their radiation is detected - in significant quantities - here on Earth. This begs the question, could a GRB destroy life on Earth, particularly if it happened nearby?
The Basics of Telescopes
Discover the basics of telescope astronomy with this guide. Telescopes come in three basic designs; Refractor, Reflector, and Catadioptric.
What Happens to the Human Body in a Vacuum?
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Mars - The Red Planet - 4th From the Sun
Discover Mars. Space / Astronomy.
Pictures of Stars - Cepheid Variable Star in...
This NASA Hubble Space Telescope image of a region of the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies. Based on the Hubble observation, the distance to M100 has been measured accurately as 56 million light-years (+/- 6 million light-years), making it the farthest object where intergalactic distances have been determined precisely. Page 3.
Supernovae
Supernovae (plural form of supernova) are the most violent events in the Universe. The energy emitted during an event can outshine an entire galaxy of billions of stars. The result of a massive star dying, they are fascinating to study, and brilliant to behold.
Pluto Picture - Pluto Not Yet Explored
Cold, distant, Pluto was the only planet in our Solar System which had not been visited by a spacecraft
Interesting Facts About Neptune
Neptune is one of the most interesting objects in our solar system . It shares commonalities with its
Have Aliens Walked Among Us?
For decades man has wondered if beings have another world have walked among us. Is it possible? Or is it simply science fiction? What about the evidence out there, is any of it credible. These are questions that we will explore.
Astronomy 101 - Modern Astronomy
Astronomy 101 - Modern Astronomy - Lesson 3: Astronomy Enters the Twentieth Century
The Top 10 Most Massive Stars
The Milky Way Galaxy is filled with hundreds of billions of stars. And the Milky Way is only one of billions of galaxies. Some of these stars are only a fraction of the Sun's mass, while others are equivalent to hundreds of Suns. So what are the 10 most massive stars in the Universe?
The Surprising Origin of the Phrase "Once in a...
We've all heard the phrase. Space/Astronomy.
Earth Pictures - Earth Globe
Earth Globe 11/20/1998 . Space / Astronomy. Page 17.
What is the Doppler Effect?
The doppler effect is a phenomenon by which a source's radiation appears to be of higher (blueshifted) or lower (redshifted) energy than it really is. This is caused by the object's motion relative to the observer, and is an important tool in astronomy as we try to understand the Universe.
Proxima Centauri Information
The closest star to our our own solar system will not always be closest, but it will be a long time before that happens. Proxima Centauri is the third star in the Alpha Centauri star system Also known as Alpha Centauri C, it circles its two companions at about 930 billion miles. This orbit takes millions of years, but will eventually carry Proxima far enough that its companions,collectively known as Rigel Kentaurus, will be closer. It is a red dwarf star, much smaller and cooler than the Sun.
Earth Pictures Gallery
Discover Earth Pictures and images in this Earth Pictures Gallery. These Earth pictures are awe inspiring and tell a story about our home planet, Earth.
Astronomy 101 - Final Exam
Free Basic Astronomy course. Astronomy 101 - Pass a simple 20 question quiz to receive your certificate.
How do You Make an Earth?
What's the recipe for an Earth-like planet? Astronomers figure it out by observing ten Earth-size planets with a special telescope.
Top 8 Telescopes Between 1000 and 5000 Dollars
If you have spent some time observing the sky with your naked eyes and a pair of binoculars, you may be ready to move on up to telescopes. As in most things in life, you typically get what you pay for. If you are looking for better telescopes to start out with, one which might carry you from a beginner to intermediate stargazer, check out these telescopes between $1000.00 and $5000.00.
Pluto Picture - Sedna Size Comparisons
The artist's rendition shows the newly discovered planet-like object, dubbed "Sedna," in relation to
Top 10 Astronomy and Space Weblogs (Blogs)
According to Sheila Ann Manuel Coggins, the About Guide to Weblogs, the definition of a Weblog or Blog
Were the Apollo Moon Landings a Hoax?
Over the last several decades the Moon landings of the late 60s and early 70s have garnered much scrutiny. Some have argued that it would have been physically and technologically impossible to land men on the Moon and return them home. Was it all a hoax? I'll discuss the claims of the conspiracy theorists and let you determine for your self if man really landed on the Moon. Did you think of an issue I didn't address? Send me an email and I will be sure to add it.
Earth Pictures - First View of Earth from Moon
The world's first view of Earth taken by a spacecraft from the vicinity of the Moon. - The photo was transmitted to Earth by the United States Lunar Orbiter I and received at the NASA tracking station at Robledo De Chavela near Madrid, Spain. This crescent of the Earth was photographed August 23, 1966 at 16:35 GMT when the spacecraft was on its 16th orbit and just about to pass behind the Moon. . Page 13.
Microwave Radiation
The microwave band is actually a subset of the broader radio band. But when the term
Neutron Stars
Supernovae are some of the most dynamic events in the Universe. They create such intense explosions that the light that they emit can outshine entire galaxies. But the compact objects that are left behind are also incredibly powerful as well.
Constellations Pictures - Aquarius - Picture of...
The Water Carrier - Genitive: Aquarii Abbreviations: Aqr, Aqar Right Ascension, (h): 23 Declination, (deg): 15S . Page 4.
Does Life Exist Elsewhere in Our Galaxy?
The search for life outside our tiny blue rock has consumed the imagination of man for decades. But now, with increasingly advanced technology we may finally be on the verge of discovering where else life may exist in our galaxy. The more we search, however, the more we realize that life may be rather precious after all.
Constellations Pictures - Apus - Picture of the...
The Crow - Genitive: Apodis Abbreviations: Aps, Apus Right Ascension, (h): 16 Declination, (deg): 75S . Page 3.
Neil Armstrong Quiz - Try Your Luck Out on The...
Neil Armstrong Quiz Try Your Hand at This Simple Quiz About Neil Armstron
Main Sequence Stars
Not all stars are the same; some are smaller, some are larger, some are red, some are blue. While these stars may be different in a variety of ways, they all spend most of their lives on what is known as the main sequence. Here, stars fuse hydrogen into helium to sustain themselves, but when that hydrogen runs out, these stars can lead vastly different lives.
The Planet Uranus
The planet Uranus is the seventh planet from the Sun, and while it does have some commonalities with its neighbor Neptune, it is also very unique in many ways. This large, gaseous, somewhat icy and undeniably beautiful planet has been acknowledged for millennia, but was curiously re-discovered in 1781 by Sir William Herschel.
Why is Getting to Mars so Difficult?
In the late 1960's the United States proved to the world that it was possible to land humans on the Moon. Now, more than forty years later, the technology that took us to our nearest neighbor is quite antiquated. So with all our new advanced technology and innovation, why have we not ventured out beyond our Moon? How difficult is it really to send humans to Mars?
Jupiter - Largest Planet - 5th From Sun
Jupiter - Pictures and Astronomy Facts - Solar System Planetary Astronomical Data and Images of Jupiter. Jupiter. Astronomy Guide to Space exploration close to home. Information on our solar system. Jupiter planetary data and graphics.
Meteorite Hunters
When a meteorite is found, the ANSMET (Antarctic Search for Meteorites) team records its location, size, color, amount of fusion crust, probable type, and anything else that might be important. Some of their tools are similar to those used by the Apollo astronauts to collect samples, and some are the latest high-tech (like Global Positioning Satellite navigation). The team takes great care not to contaminate the meteorites.
Exploring the Universe
Man has always been fascinated by the heavens. Even before man knew what was out there he has thought about walking among the stars. Science fiction has revolutionized the way that we think about space exploration. And now that science is beginning to make giant leaps forward, it may not be long before science fiction becomes a reality.
The Origin of Our Solar System
There have been no shortage of theories as to how our solar system formed. But it is now believed that the solar system formed from the collapse of a giant solar nebula some 4.5 billion years ago.
Stargazing Takes You "Out There"!
Some musings about astronomy as a science and as a pastime, for people who are interested in any aspect of stargazing: from casual observing to serious scholars.
Stars - Quiz on Stars - Try Your Luck Out on...
Stars - Quiz on Stars Try Your Hand at This Simple Quiz About Stars Discover What You Know About Star
Ptolemy Biography
Ptolemy (aka Claudius Ptolemaeus, Ptolomaeus, Klaudios Ptolemaios, Ptolemeus) lived in Alexandria, Egypt. We know very little of Ptolemy's life, including his birth and death dates. He was an astronomer, mathematician and geographer. Ptolemy created the Ptolemaic System - Earth Centered Universe.
The Speed of Light
One of the revelations of Albert Einstein's theory of relativity was that the speed of light in a vacuum was a constant and that nothing could travel faster. But what is the speed of light, exactly?
Top Toy Planetariums
You'll have a stellar time learning about our solar system and the stars with these home planetariums. All you need is a dark room and an imaginations (and batteries of course). Help your kids begin their journey into astronomy with some great educational toys.
Who Really Invented the Telescope? (Hint: It...
So, who did invent the telescope? Learn this and other space and astronomy-related frequently asked questions here.
Epsilon Eridani Information
Epsilon Eridani (tenth closest star to Earth) is the closest star known to have a planet (Epsilon Eridani b), and an unconfirmed second planet (Epsilon Eridani c). While it is smaller, cooler and slightly less luminous than our own sun, Epsilon Eridani is visible to the naked eye. It is the third closest star that is viewable without a telescope.
Astronomy Science Fair Projects Ideas
Astronomy Science Fair Projects Ideas. Take a look at these astronomy science fair projects ideas to see if they can help you come up with your own plan.
What We Should All Know About the 'New' Solar...
This isn't our parents' solar system anymore. In the last 50 years, our views of the Sun, planets, moons, rings, asteroids, and comets have changed with new discoveries.
Matter-Antimatter Power on Star Trek
Aboard the famed Starship Enterprise from the television series Star Trek the propulsion systems are energized by a matter-antimatter power plant. Is such a thing even possible? Could we ever build such a device and use it to power starships?
Earth Pictures - Earth from Apollo 8
This is how the Earth looked as photographed from a point near the Moon by the Apollo 8 astronauts. The Earth fills less than one percent of the frame exposed through 80mm lens. North is approximately vertical. Kinda lonely, isn't it? . Page 18.
Top 10 Astronomy Books for Adults
Check out these top astronomy books for adults. Find astronomy books to complete your knowledge and library. From the basics through telescopes, these astronomy books will give you the insight you need.
Canopus Information
Canopus is the 2nd brightest star in the sky. Its name either comes from an ancient city in northern Egypt or the helmsman for Menelaus. Menelaus was the king of Sparta during the Trojan war. He was brother of Agamemnon & married to Helen, the cause of the war. Canopus is so bright it is used as a reference point for navigation of spacecraft launched on interplanetary missions. It is located in the southern sky and not visible north of Norfolk, VA. Canopus is located in the constellation Carina
Pluto Pictures Gallery
Discover Pluto Pictures and images in this Pluto Pictures Gallery. The former ninth planet from the sun, these dwarf planet Pluto pictures are amazing.
African-Americans in Astronomy and Space
Celebrating Black history Month, African-Americans have played a major role in the history of the United States of America and have much to be proud of. Here, we would like to celebrate just a few of the achievements of African-Americans in the fields of astronomy and space. This list is but a drop in the bucket and while it will continue to expand will never be complete. Discover some role models for Black History Month.
Introducing Sky in Google Earth
From the people who brought you Google Earth, there's a new product called Sky, a new feature that enables users of Google Earth to view the sky as seen from planet Earth. This virtual telescope will allow users to float through the skies via Google Earth. Sky will come as a simple click from the Google Earth interface.
STS 51-L crewmembers at Ellington AFB for...
Assigned 51-L crewmembers and backup are pictured at Ellington Air Field following brief flights in NASA's T-38 jet trainers. Left to right are Barbara R. Morgan, Michael J. Smith, an unidentified visitor, Sharon Christa McAuliffe and Francis R. (Dick) Scobee. . Page 23.
Postflight Detail-Front Upper Left 1/4
LDEF: Postflight Detail-Front Upper Left 1/4 . Page 26.
Will the U.S. Really Stop Sending People to...
It's been nearly 40 years since man last set foot on the Moon. Will man return? Will we venture onto more distant worlds? Well NASA has been commissioned with a new vision, and it is one that will take man to worlds beyond our own.
Challenger Disaster STS-51L Pictures - Booster...
On January 28, 1986, the Space Shuttle Challenger and her seven-member crew were lost when a ruptured O-ring in the right Solid Rocket Booster caused an explosion soon after launch. Search teams later retrieved pieces from the Atlantic Ocean. The recovered airlock, which joined the payload bay to the crew module, rests in storage with other debris from the Shuttle's final mission. . Page 27.
Astronomy and Space Timeline
Astronomy and Space History Timeline. The history of astronomy and space exploration timeline.
Meet the Largest Radio Telescope in the World
Astronomers are building a surprisingly cool radio array in two parts of the Southern Hemisphere that, when linked together, will give them data to understand the universe a lot better.
Challenger Disaster STS-51L Pictures - Shuttle...
Hurtling out of the conflagration at 78 seconds are the Challenger's left wing, main engines (still burning residual propellant) and the forward fuselage (crew cabin). . Page 29.
STS-51-L Debris (Airlock)
On January 28, 1986, the Space Shuttle Challenger and her seven-member crew were lost when a ruptured O-ring in the right Solid Rocket Booster caused an explosion soon after launch. Search teams later retrieved pieces from the Atlantic Ocean. The recovered airlock, which joined the payload bay to the crew module, rests in storage with other debris from the Shuttle's final mission. . Page 24.
Constellations Pictures - Cassiopeia - Picture...
Cassiopeia, wife of Cepheus, the Ethiopian king of Joppa, and mother of Andromeda. - Genitive: Cassiopeiae Abbreviations: Cas, Cass Right Ascension, (h): 1 Declination, (deg): 60N . Page 18.
Stargazing Gotta-Haves
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Challenger Disaster STS-51L Pictures - LOX Tank...
The bright luminous glow at the top is attributed to the rupture of the liquid oxygen tank just above the SRB/ET attachment. At this point, Challenger is completely engulfed in a firey flow of escaping liquid propellant. . Page 28.
Free Astronomy and Space Posters - Printable...
Print these free astronomy and space posters from your home computer to create your own astronomy and space posters.
Postflight Detail-Front Lower Left 1/6
LDEF: Postflight Detail-Front Lower Left 1/6 . Page 25.
Constellations Pictures - Aquila - Picture of...
The Eagle - Genitive: Aquilae Abbreviations: Aql, Aqil Right Ascension, (h): 20 Declination, (deg): 5N . Page 5.
The Nemesis Star -- Our Sun's Companion
Several years ago a theory was proposed that sounded more science fiction than science. What if our Sun was actually part of a binary system. Only this other star is very small and barely luminous so we can't readily detect it. Eventually this star would enter the inner part of our solar system, potentially destroying all life on Earth as we know it. Far fetched? Well what was once the stuff of fiction may turn out to be reality.
Constellations Pictures - Aries - Picture of...
The Ram - Genitive: Arietis Abbreviations: Ari, Arie Right Ascension, (h): 3 Declination, (deg): 20N . Page 7.
Pluto Picture - Pluto & Charon Eclipse a Triple...
Occasionally, a planet in our Solar System will pass in front of a bright star. Since stars and planets take up so little space on the sky, such events are quite rare. Two months ago, however, Pluto and its large moon Charon passed in front of a comparatively bright triple star system known as P126. By noting how P126 A dimmed, the event was useful for studying Pluto's relatively unknown atmosphere. Page 7.
Lunar Eclipses
When the Sun, Earth and Moon are aligned, the Earth will cast a shadow on the Moon creating a phenomenon known as a lunar eclipse. These events have been the subject of mythology and lore, but are readily explained by science.
Space Shuttle Challenger Wreckage Entombment
STS-51L Challenger wreckage remains and boxes of debris being lowered into abandoned Minuteman Missile Silos at Complex 31 on Cape Canveral Air Force Station. . Page 5.
Biography of Buzz Aldrin
On July 20, 1969, Buzz Aldrin became the second man to ever set foot on the Moon. The successful Apollo 11 Moon mission was a defining moment for America, and for mankind in general.
Valentina Tereshkova Biography
The biography of Valentina Tereshkova, the first woman in space. The USSR sent Tereshkova into space many years before NASA sent astronaut Sally Ride.
Rigil Kentaurus Information
Rigel Kentaurus, also known as Alpha Centauri, is the third brightest star in the sky. Its name literally means foot of the centaur. It is actually a triple star system made up of Alpha Centauri A, Alpha Centauri B, and Alpha Centauri C (also known as Proxima Centauri because it is the closet star to earth). Rigel Kentaurus is located in the constellation Centaurus.
Pluto Picture - Pluto
An artist's conception of Pluto and its moon Charon. . Page 6.
Constellations Pictures - Centaurus - Picture...
The Centaur - Genitive: Centauri Abbreviations: Cen, Cent Right Ascension, (h): 13 Declination, (deg): 50S . Page 19.
Space Debris Impact Experiment, Tray A05
The flight photograph was taken while the LDEF was attached to the Orbiter's RMS arm prior to berthing in the Orbiter's cargo bay. A combination of the space environment and contamination has caused the paint dot on the clamp block located at the center of the bottom tray flange to change from their original white color to dark brown. Finger prints observed on the lower tray flange and sidewall indicate the lack of proper preflight handling/cleaning. Page 30.
STS 51-L crew patch
Members of the STS 51-L crew designed this patch which will represent their mission. The Challenger is depicted launching from Florida with a backdrop of Halley's comet against the U.S. flag. Surnames of the crewmembers encircle the scene, with the payload specialists being recognized below. Surname of the first teacher in space, Sharon Christa McAuliffe, is followed by a symbolic apple. . Page 22.
Top 8 Telescopes Between 500 and 1000 Dollars
If you have spent some time observing the sky with your naked eyes and a pair of binoculars, you may be ready to move on up to telescopes. As in most things in life, you typically get what you pay for. If you are looking for better telescopes to start out with, one which might carry you from a beginner to intermediate stargazer, check out these beginner's telescopes ranging from $500 to $1000.
Teachers in Space project logo for mission STS...
Teachers in Space project logo for mission STS 51-L . Page 31.
Thermal Radiation
: As matter is heated kinetic energy is imparted to the charged particles that make up the structure
Constellations Pictures - Cepheus - Picture of...
Cepheus, son of Belus, king of Egypt and grandson of Poseidon, King of Ethiopia (or Joppa), husband of Cassiopeia and father of Andromeda. - Genitive: Cephei Abbreviations: Cep, Ceph Right Ascension, (h): 22 Declination, (deg): 70N . Page 20.
Astronomy 101 - Solar System - Sun
Astronomy 101 - Solar System - Sun - Lesson 8: Visiting Close to Home
Official portrait Sharon Christa McAuliffe, STS...
Official portrait Sharon Christa McAuliffe, STS 51-L Teacher in Space. She is wearing the blue Shuttle flight suit and is holding a small model of the Shuttle. There is an American flag in the background. . Page 20.
What is a Star?
When you gaze out into the darkness of space you will undoubtedly notice tiny balls of light shimmering in the night. What are these beautiful objects? Well, most of them are stars and there are billions upon billions of them out there waiting to be discovered.
Top 7 Beginner's Telescopes Between 300.00 and...
If you have spent some time observing the sky with your naked eyes and a pair of binoculars, you may be ready to move on up to a telescope. As in most things in life, you typically get what you pay for. If you are looking for a better telescope to start out with, one which might carry you from a beginner to intermediate stargazer, check out these beginner's telescopes ranging from $300 to $500.
Hans Lippershey Biography
Hans Lippershey was probably not the first person to experiment with combining lenses to create crude telescopes, but he applied for a patent in 1608.
Doctor Mae Jemison Pictures Gallery
Chemical engineer, scientist, physician, teacher and astronaut, Dr. Mae Jemison has a wide range of experience in technology, engineering, and medical research. In addition to her extensive background in science, she is well-versed in African and African-American Studies, speaks fluent Russian, Japanese, and Swahili, as well as English and is trained in dance and choreography. In completing her first space flight, Dr. Mae Jemison was the first African-American woman in space.
Astronomy 101 - Astronomy History - Seeing Is...
Astronomy 101 - Astronomy History - Seeing Is Believing - Lesson 2: History - A Renaissance in Science
Space Firsts - Basics
Space Firsts - Space Basics - Firsts In Space exploration - Space Firsts - Basics Series; What You Need To Know About Space. Discover who did what and when in these space firsts. From the first Earthling in space to the first man on the moon.
What is a Planet?
What is a planet? It is one of the questions that I get most often in my astronomy class, and its a question that is at the source of great controversy. In 2006 the International Astronomical Union decided to answer that question and in doing so stripped Pluto of its planet-hood. The resulting fallout has caused rifts within the scientific community. All because of one, simple question: what is a planet?
Earth Pictures - First Picture of the Earth and...
This picture of the Earth and Moon in a single frame, the first of its kind ever taken by a spacecraft, was recorded September 18, 1977, but NASAs Voyager 1 when it was 7.25 million miles (11.66 million kilometers) from Earth. The moon is at the top of the picture and beyond the Earth as viewed by Voyager. In the picture are eastern Asia, the western Pacific Ocean and part of the Arctic. Page 14.
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