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Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

The curious minds at What If explore what would happen if there were an alien civilization on Proxima b.

Pluto took New Horizons nearly a decade to reach, and Proxima Centauri is far beyond that challenge. Timing, propulsion, planetary alignments, and unimaginable distance explain why the most tempting ...

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got ...

For the first time in more than 15 years, the International Academy of Astronautics (IAA) Search for Extraterrestrial ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.