Stars - Information on Stars
What are the Different Types of Stars?
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.
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.
Top 10 Closest Stars to Our Solar System
According to the About Astronomy and Space Online Dictionary, a star is a ball of mostly hydrogen and helium gas that shines extremely brightly. A star is so massive that its core is extremely dense and hot. At the high core temperatures of a star, atoms move so fast that they sometimes stick to other atoms when they collide with them, forming more massive atoms and releasing a great amount of energy. This process is known as nuclear fusion. Here are the Top 10 Closest Stars to our solar system.
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.
Top 10 Brightest Stars
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...
Constellations Pictures Gallery
Constellations information. Discover more about each of the 88 modern constellations. Find the names, information, and pictures of the 88 constellations.
Pictures of Stars
Stars are massive shining spheres of hot gas, the closest of which is our Sun. 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. Check out these pictures of stars to see the wide variety. Discover incredible pictures and their descriptions.
New Neighbor - Newly-Discovered Star May Be Third-Closest
The local celestial neighborhood just got more crowded with a discovery of a star that may be the third closest to the Sun. The star, "SO25300.5 165258," is a faint red dwarf star estimated to be about 7.8 light-years from Earth in the direction of the constellation Aries.
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.
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 Top 10 Largest Stars
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.
The Top 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.
Star Names - How Did Stars Get Their Names?
Star names can sometimes sound cryptic, or at the very least - unusual. While other times star names can sound familiar. Stars get their names through several different means, but often names arise out of traditional conventions from ancient cultures. Called proper names (sometimes also known as traditional, popular or common names), this is how...
There are some star names that are familiar to us, Capella, Sirius and Polaris to name a few. But some just sound like some letters and numbers were pulled out of a hat. So what gives? Well, these names are identifiers used in star catalogues. What really gets confusing is that there are many different star catalogues, each with their own...
Not all stars in the Milky Way are isolated like our Sun, about a third are bound in orbit with one or more stars. These systems, known as binary or multiple star systems, can be very difficult to detect despite their commonality.
Once stars like our Sun have exhausted the hydrogen fuel in their cores, their cores will compress and heat up. The increased temperature will cause the star to expand creating a Red Giant.
Red Supergiant Stars
The largest stars in the Universe are thought to be red supergiants. The evolution of such stars is an active area of research among scientists. Most research points to their progenitor as high mass stars, meaning that they are also destined to die in a brilliant supernova.
When massive stars leave the main sequence they usually become red supergiants. As they fuse heavier and heavier elements, however, they may oscillate between the red and blue supergiant stages; changing color as they expand in and out.
While our Sun is of above average mass compared to other stars in our galaxy, it is still quite small compared to the most massive stars in the Universe, The most massive of which exceed 100 times that of our central star. Most of these are classified as hyper giants; incredible massive and incredibly luminous stars.
All stars eventually die and leave behind stellar remnants. What these objects actually are depends on the star's original mass. Stars like our Sun will leave behind an object known as a white dwarf. But what are they?
Main Sequence Stars
Not all stars are the same, but they all spend most of their lives on what is known as the main sequence. Here, stars fuse hydrogen into helium to maintain hydrostatic equilibrium. But they don't stay on the main sequence forever, high mass stars can, very quickly go supernova, while there are low mass stars that have been on the main sequence...