When you look up in the night sky, our moon is unmissable.Just like Earth, it's round and has a solid, rocky surface. But is our moon actually a planet? The answer is technically no — at least ...

Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with ...

On Earth, you can look up at night and see the Moon shining bright from hundreds of thousands of miles away. But if you went to Venus, that wouldn’t be the case. Not every planet has a moon – so why ...

This month’s stargazing agenda brims with planet sightings. We have planet pairings, moon-planet hangouts, and a special treat to end the month: several evenings with all seven of our space neighbors ...

Is the moon a star or a planet? The correct answer is "neither," but that's not the consensus reached when the argument comes up in this funny TV clip. During a recent show for the QVC shopping ...

Moon’s precursor planet, Theia, disappeared billions ago, leaving scientists no direct chemical evidence to support the ...

July will be packed with cosmic activity. Mercury, the fastest-moving planet in our solar system, will make a rare and optimal appearance, providing a chance to spot it near the western horizon.

PASADENA, Calif. –The newly discovered 10th planet, 2003 UB313, is looking more and more like one of the solar system’s major players. It has the heft of a real planet (latest estimates put it at ...