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

Alien life may not need the kind of home humans instinctively search for. Some of the strangest possibilities begin once ...

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

Is anybody out there? Probably. Most stars have planets; we've discovered more than 6,000 exoplanets thus far, and the most basic statistics point toward the existence of countless potentially ...

Cooperation between Russia and the United States in the field of scientific search for extraterrestrial life and alien ...

Experts believe ancient alien civilizations have been living on mars. See more in this clip from Season 1, Episode 7, ...

For decades, science fiction writers have tried their best to prepare us for eventual contact with aliens. Their efforts are dominated by several recurrent tropes. There's the invasion by a warlike ...

For decades, SETI researchers have focused on finding narrow-band radio signals that might stand out from the natural universe. But what if an advanced civilization that wanted to communicate would ...

“There is a silence in the night sky that has bothered me for as long as I can remember.” That line, attributed to Richard Feynman, lands because it gets at a simple, stubborn feeling. The sky looks ...

In 1950, famed astrophysicist Enrico Fermi posed a profound question during a casual lunch with colleagues: Where is everybody? In other words, if there’s an extremely high probability that advanced ...

The mathematical certainty that 'they' definitely exist in the universeWhen looking up at the night sky, everyone has surely wondered at least once, 'Is there intelligent life other than us somewhere ...