New simulations suggest the moon may have formed almost instantly after a giant impact, not slowly from a debris disk.

The research could also influence the hunt for exomoons, which orbit planets outside our solar system.

There is a fact almost everybody knows and almost nobody can explain, which makes ...

How did Earth get its Moon? New simulations suggest a Mars-sized body called Theia collided with Earth 4.5 billion years ago, and the Moon could have formed within hours.

Scientists have discovered that the Moon-forming collision may have depended heavily on how hot and physically strong early ...

Earth's orbit just got a bit more crowded. A second moon joined the Earth's orbit on Sunday, September 29 th. The ‘mini moon’ is actually a small asteroid, the size of a school bus, that is known as ...

Two astronomers estimate that a Moon city of one million people could use up the polar ice in about a century, even with ...

When massive stars die, some end in supernova explosions that scatter newly forged material through space. Traces of those ancient blasts can eventually settle on nearby worlds, and a new study led by ...

A common misconception is that moon phases are caused by Earth’s shadow. The nearly 30-day cycle of the moon around the Earth ...

In the past, scientists have theorized that Venus possibly had a moon at one time that got hit with something massive, ...