The Search for Alien Artifacts Is Coming Into Focus

Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...
Hosted on MSN

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 ...