Are alien probes hiding in our backyard? A new study says we've barely looked

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...
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Can we detect alien artifacts?

There are tens of billions of Sun-like stars in the Milky Way, an immense tally that encourages the possibility that extraterrestrial life peppers the universe. Finding evidence for aliens - even ...

Could aliens already be in our solar system? Scientists say we can't rule it out

Humanity has already sent five spacecraft on trajectories that will eventually carry them beyond the Solar System, ...