The two alien worlds make extremely close approaches to each other every 97 days, on average; during those cosmic family reunions, the two planets are separated by less than five Earth-moon distances.

If aliens are watching Earth ... so they’d be hard to detect from other planets. But what about those that are specifically designed to reach other planets? Humans have sent spacecraft all ...

The Alien franchise continues to expand its mythology following the release of Alien: Romulus this year. Now, a villain ...

SEE ALSO: Scientists search near supernova for aliens trying to contact us So-called planet-planet occultations ... seem to have originated from someone other than humans. But the research wasn ...

However, after decades of not finding anything, SETI researchers are increasingly considering other strategies ... between the two planets from the alien equivalent of the Deep Space Network.