Top 10 stories of 2009
Cosmologists found more evidence of dark energy, astronauts returned Hubble to prime condition, astronomers photographed worlds beyond our solar system, and more.
By Liz Kruesi
How astronomers probe weather on exoplanets
By plugging their latest findings into Earth's climate patterns, astronomers can approximate the weather on distant worlds.
By Robert Zimmerman
Illustrated: Explore our neighborhood of galaxies
Some 50 galaxies crowd around the Milky Way. Astronomers call them the Local Group.
By Richard Talcott; Illustration by Roen Kelly
10 tips for Moon watchers
Mountain ranges, vast volcanic plains, and more than 1,500 named craters make the Moon a target you'll return to again and again.
By Michael E. Bakich
How to start a meteorite collection
Learn Contributing Editor Raymond Shubinski's two main tenets of meteorite collecting, and meet some of the dealers he trusts.
By Raymond Shubinski
Dancing with the galaxies
Target these dozen galaxies with a modest-sized telescope, and you'll find that the Whirlpool is just one shining example of close galaxy pairs.
By Richard Jakiel
Explore Scientific's 5-inch APO combines portability and power
High-quality optics and craftsmanship make this a telescope you'll be proud to own.
By Mike Reynolds
Astronomy, 2010, February