Its been more than half a century since the final Apollo mission left the Moon. But scientists are still learning from it. A few years ago, they started examining samples from Apollo 17 that hadnt b

It may be a cliche, but its true: If at first you dont succeed, try, try again. Thats certainly the case for the scientists hunting for dark matter. Theyve conducted many big experiments over the

Spring arrives in the northern hemisphere tonight, at the moment of the March equinox, as the Sun crosses the celestial equator. Day and night are about equal across the entire planet hence the name

When he was just 14 years old, Franz von Paula Gruithuisen found himself in the middle of the Austro-Turkish War. He wasnt a prisoner or a refugee. Instead, he was a field surgeon. But just a year la

The types of planets you have as neighbors may depend on your neighborhood. The planets discovered in our region of the Milky Way Galaxy come in just about every variety: hot Jupiters, super-Earths, m

The Moon hangs precariously above a star with a nasty-sounding name tonight: El Nath. The name comes from an Arabic phrase that means butting or goring. It indicates the stars position in its con

If youre ready for a taste of summer, look no farther than the dawn sky. The constellations in view at first light are just what youll see as night falls in July and August. Scorpius is low in the s

Two beautiful objects team up this evening: the Moon and the Pleiades. The little star cluster is close above the Moon. Binoculars will help you pick out some of its brighter stars through the moonlig

Scientists are finding so many moons of the solar systems giant planets that they can hardly keep up with them. By the end of last year, Saturn was in the lead, with 146 confirmed moons. Jupiter th

Stars come in a whole spectrum of colors, from icy blue to deep red. But our eyes can see the color in only a few stars most of them are simply specks of white. Thats because most stars are too fai