科学与环境
How did Mars get its moons? Japan's MMX space mission aims to solve the puzzle
来源: Phys.org - latest science and technology news stories · 发布于
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.
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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Brazil's elections matter for the planet. This is why
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World | Deutsche Welle ·