What was it about Earth’s atmosphere that made our planet “just right” for life, whle Mars and Venus became inhospitable? Although the phrase “greenhouse gases” has taken on threatening overtones in recent years, these gases historically were responsible for creating an Earth (and perhaps even a Mars) capable of sustaining life.
The breakup of the shuttle Columbia is only the latest in a string of space-flight mishaps that range from the tragic to the absurd. Bob Berman argues that risk is inevitable in the quest to go where no one has gone before.
Astronomers are learning how to combine light from more than one telescope to create virtual telescopes with incredible resolution.
Gorgeous, bright nebulae, star clusters, dark nebulae, and star clouds lie within the heart of the Milky Way in Sagittarius.
Learn to record the ever-changing sky with a regular camera and sturdy tripod. Examples abound in this how-to piece on astrophotography.
Are you looking for a special vacation retreat – one with dark skies, large telescopes, and friendly guides? Star Hill Inn is the place for you.
Gunning for the gas giants
Uranus and Neptune are surprisingly easy to spot with binoculars and telescopes. Use this handy guide to locate them over the next several months.
This month in Astronomy
Bob Berman’s strange universe
Glenn Chaple’s observing basics
The sky this month