The discovery points to what astronomers have thought for decades, that Saturn's rings were caused by a massive collision ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

The hefty space rock 2014 TN17 is large enough to wipe out a city, but it will pose no risk to our planet when it sails by this Wednesday (March 26). Researchers will monitor it carefully during its ...

Saturn just solidified its title as ‘moon king’ with an updated tally of 274 satellites orbiting the gas giant. The ...

A quartet of small, rocky exoplanets likely circle Barnard's Star, around 6 billion light-years from Earth, putting them in ...

The largest, Titan, is bigger than the planet Mercury ... side of the moon covers nearly two-fifths of the moon's diameter and is nearly the size of fellow moon Mimas. Scientists have found ...

Firefly Aerospace on Monday announced the conclusion of its Blue Ghost lunar lander mission, declaring it the first “fully ...

But in a wonderful bit of cosmic serendipity, the moon is also 400 times closer to us, which results in the solar and lunar disks appearing to be exactly the same size in our sky, making for a ...