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December 1993

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 Star That Blew a Hole in Space

We live in a vast, expanding bubble carved out of interstellar space. A strange gamma-ray Pulsar may be the smoking gun of the supernova that created this bubble.

Death from the Sky

In 1908 a small asteroid exploded over remote Siberia, sounding a warning astronomers are just beginning to hear.

The Odd Little Moons of Mars

Are Phobos and Deimos captured asteroids? Controversy still shrouds the origin of these tiny Martian satellites.

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