About 4.5 billion years ago, a Mars-sized object, named Theia, slammed into a proto-Earth to create the Moon.
A recent discovery suggests Mars may have once had a much larger moon, which could have caused tides in a lake that once filled Gale Crater. This intriguing possibility comes from a study of sediment ...
The moon is Earth's only natural satellite, a rocky celestial body that orbits our planet at an average distance of about 384 ...
As more than 120 million people tuned in to the Super Bowl for kickoff on Sunday evening, SpaceX founder Elon Musk turned instead to his social network. There, he tapped out an extended message in ...