The third known visitor from another star system, 3I/ATLAS, has already delivered on one of the biggest promises in modern ...

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Imagine a silent, alien surveillance probe entering our solar system, an ancient construct watching us with indifferent eyes. Now, imagine the man suggesting this is not a science fiction novelist, ...

The prevailing consensus is that 3I/ATLAS behaves like a comet because it is, quite simply, a comet, albeit one with a passport from a distant star system. NASA's Europa Clipper spacecraft has even ...