2009

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.

Robotic Spaceflight

Will the Messenger probe to Mercury be able to get a photograph of the asteroid Icarus?

Zoom in on McNeil’s Nebula

Stephen James O’Meara’s Secret Sky: Extreme observing: naked-eye galaxies

Ask Astro web extra: What would the Sun’s rays do to Earth if the ozone layer was no longer present?

Does flying in a plane underneath the aurora expose a person to radiation? Would it be dangerous?

Is it possible for a large star to collapse itself out of existence rather than just forming a black hole?

Telescopes and Equipment

I have a 70-millimeter refracting telescope. Would a scope with a larger diameter make objects look bigger or closer?

David H. Levy’s Evening Stars: A Bonanza night

Bob Berman’s Strange Universe: Can you imagine?

Bob Berman’s Strange Universe: A dozen cool facts

I read somewhere that mercury is being used to make liquid-mirror telescopes. What are the advantages of collecting light this way?

Do black holes and their accretion disks always spin in the same direction? Does a supermassive black hole always spin in the same direction as its host galaxy?