Ever since physicist Freeman Dyson first proposed the concept in 1960, the "Dyson sphere" has been the holy grail of techno-signature hunters. A highly advanced civilization could build a "sphere" (or ...

This faint galaxy is hard to look away from.

Red dwarfs make up the vast majority of stars in the galaxy. Such ubiquity means they host the majority of rocky exoplanets we've found so far—which in turn makes them interesting for astrobiological ...

An observation of an ultra-faint galaxy, captured as it was shortly after the Big Bang, indicates the presence of material from the first generation of stars. Because light travels at a finite speed, ...

A galaxy roughly 12.5 billion light-years from Earth is pumping out energy equivalent to hundreds of trillions of suns, a ...

A recent piece of art by 'Supergirl: Woman of Tomorrow' artist Bilquis Evely features an alien cut from 'The Last Jedi.' ...