Earth’s deep past leaves plenty of unanswered questions. None currently proves an alien visit, but scientists know the ...

Some people treat the idea of aliens as nonsense, but scientists actually believe that the notion we're alone in the entire universe is alien! The universe is so vast and so unexplored that ...

The search for advanced alien civilizations goes far beyond listening for radio signals, exploring possibilities such as laser beacons, neutrino communication, technosignatures, Dyson swarms and ...

What if aliens were building a massive power plant?Last time, I talked about the "Kardashev scale," which classifies the ...

Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that signal has normally been based on our own current cutting-edge technology. But ...