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Anettt [7]
3 years ago
8

How would scientists know that there is life existing outside of Earth? What do they use?

Biology
1 answer:
worty [1.4K]3 years ago
3 0
They would know if they see anything like traces of water or anything else that would be nessecary for a living organism to have. They look for these with technology like the hubble telescope as well as the drone on Mars to gather as much information as possible.
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