Earth, second moon
It is widely believed that the moon formed during a collision between Earth and a small planet known as Theia.
We think of the moon as orbiting the earth, following a spiraling trajectory as the earth itself orbits the sun. But this is ...
This week see many special celestial sights, from a bright comet and a solar eclipse to a bright Venus and the possibility of ...
One prominent voice challenging reports on Earth's "second moon" or "mini-moon" is the host of the recent iteration of ...
All of that, plus fuel, means the spacecraft tips the scales at approximately 13,000 lbs., which requires a bruiser of a ...
Rather than forming from an ancient collision between Earth and another planet, the moon may have been snatched from another ...
Asteroids are ripe for mining. Some contain gold or platinum. Others could help make rocket fuel. When they're mini-moons, ...