Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Mars has an active, electrically charged surface where dust storms and spinning dust devils regularly move and reshape the ...

Jupiter currently shines as a brilliant silvery "star" in the constellation Gemini the Twins, low in the east-northeast sky ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to ...

LYNCHBURG, Va. (WSET) — If you're trying to get a beautiful look at the planets in our solar system, you're in luck. Between February 25 and February 28, all seven planets in our solar system will be ...

A solar conjunction occurs as Venus' orbit carries it into alignment with the sun and Earth. Venus will align with the sun ...