How did the Theia crash?

The Theia impact hypothesis suggests that a Mars-sized body named Theia collided with the early Earth around 4.5 billion years ago. This colossal impact ejected a significant amount of debris into orbit around Earth, which eventually coalesced to form the Moon. The collision is believed to have been a glancing blow rather than a direct hit, allowing both bodies to retain much of their mass. This event played a crucial role in shaping the Earth's geology and environment, influencing the development of life.