Is there evidence of a planet ever existing between Mars and Jupiter? MarkSmithtown, New York This splendid question gives us ...

Mars and the moon will also be in conjunction tonight. If you're lucky enough to have clear skies tonight, you can catch a ...

They thought Mars and Jupiter were too far apart and that there should be a planet between them. A group of German astronomers organized themselves into a Missing Planet Bureau and undertook a ...

That's why humans have sent spacecraft to the Moon, Venus, Mars, Saturn's moon ... the full brunt of Jupiter's rotation. Jupiter is the fastest rotating planet in our solar system.

(CNN)-- Scientists don't know why, but one of Jupiter's two main cloud belts has disappeared -- again. Like a wayward pet, the belt has gone missing before ... around the planet from there ...