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September 2009 |
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The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in an easy-to-understand, user-friendly style that's perfect for astronomers at any level. |
Features The day Earth came to life By
James S. Trefil, Wanda O'Brien-Trefil At some point in the dim past, non-living matter started to replicate itself. Scientists are still trying to figure out how. |
pg. 24 |
By
Daniel Pendick Ammonia, silicon, and hydrocarbons can theoretically support life. |
What revved up the galaxy's hyperfast stars? By
Ray Jayawardhana Since 2003 astronomers have found 16 stars escaping the Milky Way's gravity. The slingshot could be our galaxy's central black hole. |
pg. 30 |
By
Liz Kruesi A simulation shows how merging galaxies can fling stars to hypervelocities. |
A new day dawns for Hubble By
Richard Talcott Shuttle astronauts installed two new instruments, fixed two older ones, and upgraded the space telescope's gyroscopes and batteries. |
pg. 36 |
The stars that revealed the vastness of the universe By
Bruce Dorminey Cepheids are pulsating variable stars that astronomers use to measure cosmic distances. They remain at the heart of solving key cosmic riddles. |
pg. 48 |
By
Richard Talcott The first known Cepheid variable star lies in the southeastern corner of Cepheus the King. Here's how to find it. |
Astronomy's 2009 Astroimaging Contest By
Michael E. Bakich Amateurs accepted the challenge and sent us these dazzling images. |
pg. 56 |
By
Michael E. Bakich See all the entries of the 2009 Astroimaging Contest. |
10 tips for beginning astroimagers By
Michael E. Bakich Use these techniques to produce celestial images you'll be proud to share with friends and relatives. |
Departments This month in Astronomy Astro Confidential Letters Web Talk Bob Berman's Strange Universe David H. Levy's Evening Stars Astro News The Sky this Month Ask Astro Stephen James O'Meara's Secret Sky Glenn Chaple's Observing Basics New Products Telescope Insider Advertiser Index Reader gallery Deep-sky Showcase The Cosmic Grid
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