There is a silence in the night sky that has bothered me for as long as I can remember. ” That observation, attributed to ...

How far away aliens might detect life on Earth.

Scientists identify exoplanet candidate HD 137010 b, a possible Earth-size world orbiting a Sun-like star 146 light-years away ...

If you examine our solar system’s giant planets, you’ll notice right away that they’ve all got moons—a lot of moons. While ...

Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of ...

Although astronomers have found thousands of exoplanets, the number of confirmed exomoons—and exorings—is still zero. But ...

President Donald Trump has promised to declassify top-secret alien files and UFO documents. Here is what the Pentagon has ...

Astronomers used the VLA and MeerKAT radio telescopes to search the Hycean exoplanet K2-18b for alien technosignatures, analyzing millions of signals but finding no confirmed artificial radio transmis ...

If life ever existed on Mars, it might have looked like microfossils right here on Earth.

Disclosure may not reveal alien visitors, but it will reveal something equally important: how science, measurement and ...

What would happen, then, should the first unquestionable indication of alien technology come in the form of a momentary flare, powerful enough to be observed, but too short to question? The ...

Compared to previous theories, the current research emphasizes the complexity of the biological and chemical processes that brought about life.