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Jupiter's moon Europa has an ice shell about 18 miles thick — and that could be bad news for alien life
Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...
The interstellar visitor may still have a few things to tell us before it leaves our solar system.
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Giant 'metal cloud' spotted in nearby star system could be hiding a second alien sun
Astronomers suspect that a massive metallic cloud swirling in a nearby star system could be hiding a giant planet or dwarf ...
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