If aliens are out there, why haven’t we heard from them? That’s the question at the center of Pop Mech’s new story, “Aliens Probably Exist—But They’re Staying Silent For a Reason, NASA Scientist ...

Is there an Outer SpaceX? With 3I/ATLAS set to fly by Earth in just over a week, experts continue to speculate over its origins. Harvard Scientist Avi Loeb believes that if aliens, the comet wouldn’t ...

A group of researchers say it's time for academia to get serious about studying UFOs. The movement, championed by the Society for UAP Studies, is wrapping up an international conference aimed at ...

The comet 3I/ATLAS is taking a long holiday journey this year. It's visiting from another solar system altogether. It's the third interstellar object recorded passing through our solar system.

The Dark Forest theory is one proposed solution to the famed Fermi Paradox, which has bewitched astronomers for more than half a century. To put it concisely, the paradox asks if the cosmos is nearly ...

A new study argues that conditions necessary for intelligent extraterrestrial life may be far less common than once thought. Planets lacking plate tectonics and sufficient carbon dioxide and oxygen ...

Twenty years after Biosphere 2 broke ground near Oracle, the one-of-a-kind terrarium and its surrounding land have been sold for $50 million. Development of 1,500 new homes and a resort hotel on the ...