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May 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

Heating the Sun's Million Degree Corona

The Sun's tenuous outer atmosphere blazes hundreds of times hotter than its surface. Astronomers are just beginning to understand how.

Motes in the Solar System's Eye

Tiny bits of debris from beyond our solar system may tell astronomers how planetary systems form.

Violent Volcanos of Io

Fiery eruptions on Jupiter's moon Io spew volcanic ash a hundred miles high and a thousand miles wide.

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