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How did Mars get its moons? Japan's MMX space mission aims to solve the puzzle
The Earth got its moon when a small planet collided with our planet more than 4 billion years ago. This impact hurled molten rock into space, which eventually coalesced to form the satellite we can see every night from across our planet.
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How the order is made
- 14
- 23
- 14 d
- 0.04
- ×1.18
- 4 h