* A Mars-sized object, called Theia, collided with the early Earth.
* The impact was glancing, not a direct hit, and occurred at a relatively slow speed.
* The impact ejected a massive amount of material from both Earth and Theia into orbit.
* This material eventually coalesced to form the Moon.
Key features of the Giant Impact Hypothesis:
* Explains the Moon's composition, which is similar to Earth's mantle but depleted in volatile elements.
* Accounts for the Moon's relatively low iron content compared to Earth.
* Explains the Moon's tilted orbit and its relatively low density.
While the Giant Impact Hypothesis is the most widely accepted theory, it still has some unanswered questions and alternative theories exist. However, the Giant Impact Hypothesis remains the best explanation for the Earth-Moon system based on current scientific evidence.