Theia Hypothesis

The Theia Hypothesis suggests that roughly 4.5 billion years ago, a Mars-sized object named Theia collided with the early Earth. The impact was so intense that material from both bodies was ejected into space, eventually coalescing to form the Moon. This explains why the Earth and Moon have similar compositions, especially in their rocky materials. The hypothesis helps scientists understand how the Moon originated and provides insights into early planetary formation processes in our solar system.