Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance ...

Hundreds of mysterious objects have appeared in images captured by the Webb space telescope. The curious dots could reshape ...

A mysterious metal-rich asteroid called Psyche has been baffling scientists for over two centuries, and its true origin ...

T he first time I heard about galaxies without dark matter, I was sitting in my very first graduate class at the University ...

The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.