Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Looking up reveals nature’s skylight, framing Arizona blue against fiery red stone in perfect composition. Photo credit: ...

On Sunday, an aging Japanese spacecraft named Hayabusa2, which completed its initial sample-return objective more than half a ...

"This is the first time that we've been able to predict in human history an asteroid visibly passing by the Earth." ...

Having considered more than 1,000 cases, this analyst of unidentified anomalous phenomena has honed a rational process for ...

From "Independence Day" to "Invasion of the Body Snatchers", movies and TV shows are packed with advice for anyone aspiring ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

A Harvard University professor known for his polarizing theories about extraterrestrial life has been tapped by the White ...