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

Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

UFOs could be using our oceans to remain hidden from humanity, a retired US admiral has suggested, as a huge underwater ...

A mysterious celestial object has arrived from outside the solar system.Last time, I talked about 'Tabby's Star,' where a ...

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

When gazing at the countless stars shining in the night sky, have you ever wondered about this?"Is there life other than on ...

Earth's oceans are unique in the solar system and essential for life, but experts say that our planet wasn't always so blue.

Scientists may have finally found an answer to one of the biggest mysteries surrounding our planet: Where did Earth's water ...

Jay Stratton led the classified operation that tried to trap something that wasn’t from Earth.

Known as the giant-impact hypothesis, this proposed event involves a collision between Earth and a hypothetical Mars-sized protoplanet astronomers call Theia.

James Webb reveals how powerful winds and extreme temperature differences create an unusual atmospheric bulge on the giant ...