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Carolyn Collins Petersen
Guide since 2014


About.com Space / Astronomy

Dark Skies are our Heritage

Have you ever heard of light pollution? It's the overuse of light at night. Nearly everyone on Earth has experienced it. Cities are bathed in light, but lights also encroach on the wilderness and rural landscapes as well. The International Dark-Sky Association is a leading authority on light pollution, its causes, and ways to reduce it while preserving safety and security. Check out their Web site, and their video "Losing the Dark", available to watch on Youtube and Vimeo, and downloadable for educators, planetariums, and other outreach professionals.

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Explore Hercules!

Peeking at July Skies

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Check out some great sky sights in July! Start out with the planets Mars and Saturn, not far from the stars Spica and Antares, respectively.  (Click on the title to get a bigger version of the star chart.) Antares lies in the plane of the Milky Way and if you direct your gaze to this area, you'll find many star clusters and nebulae to explore! 

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Space / Astronomy Spotlight10

The Latest from Enceladus

A look at the latest discovery at Enceladus, Saturn's frozen and fascinating watery moon.

Five Cool Space Education Resources

A look at five (of many) online and real-world resources for space exploration education.

A Personal Tour of Astro-Education Resources

A short look at a few of the many science education resources for teachers, professors, and outreach professionals.

A Black Hole Cannibal at the Heart of the Milky Way

Our galaxy's central black hole gives hints about how supermassive black holes grow.

Want to Find Life? Study a Sunset!

A look at Titan and how sunsets there help astronomers understand distant planet atmospheres.

Five Fun Ways to Learn about Astronomy

A quick look at some ways to start learning astronomy that involve books, software, TV, movies, and a visit to your local planetarium.

Titan: Saturn's Most "Earth-like" Moon

A look at Titan from the Cassini Mission.

Vacation in the Stars!

Introducing a story about places to visit if you're interested in astronomy and space.

The Pale Blue Dot

How our solar system looks from deep space.

Next Exit: Europa

A visit to Europa will help uncover possible abodes for life in its deep oceans.

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