Scientists believe the moon formed during a giant impact about 60-175 million years after the solar system was born. To arrive at this estimate, they can use rocks from Earth. As large planetesimals ...

Loki Patera is 202 kilometres (126 mi) in diameter, covers 20,000 sq km (7,700 sq mi), and was the largest volcanic feature found on Io until these new observations revealed the hot spot in the south ...

New research suggests that what were once thought to be traces of the Moon's formation are remnants from a transformative "re-melting" event ... after the rest of the solar system.

The moon may ... in the solar system, research suggests. Craters on the lunar south pole might be "doubly shadowed," meaning they are shielded not only from direct solar heat but also from ...