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November 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

Intruder Galaxies

Five billion years ago the Andromeda Galaxy flung two galaxies out of the Local Group and swallowed two others.

Where the Lunar Winds Blow Free

Air? On the Moon? Though there's not much of it, the Moon's atmosphere may help solve some nagging lunar mysteries.

Close Encounter with a Comet

In 1986 Giotto made headlines at Comet Halley. Last year it garnered less hype but more data as it flew past Comet Grigg-Skjellerup.

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