Features

Exploring Small Volcanos on Mars

Olympus Mons may get the headlines, but the smaller Martian volcanos are beginning to speak to scientists about the history of the Red Planet.

Here’s Looking at Ida

When the Galileo spacecraft flew past the asteroid Ida, it discovered a magnetic field and some other surprises.

An Infrared View of Our Universe

Sophisticated new detectors reveal stunning details in familiar galaxies and nebulae.

Hubble Better Than New

The verdict is in, and Hubble’s vision is sharper than anyone dared hope.

Sky Almanac

Spy a razor-thin crescent Moon on the evening of April 11, then watch the next night as a slightly fatter crescent Moon passes Venus.

High-Impact Astrophotography

Here’s how to capture fine details in your planetary photos.

November’s Colorful Eclipse

Observers noted a wide range of colors on the face of last November’s eclipsed Moon.

Jupiter’s Magnificent Show

Backyard astronomers will love observing Jupiter’s active atmosphere as they prepare for the impact of Comet Shoemaker-Levy 9 in July.

Hats, Hockey Sticks, and Humpbacks

The spring sky will show you that not all edge-on galaxies look alike.

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