Are we alone in the universe? It’s the kind of question that fuels debates, History Channel marathons, and real-world space missions. The new documentary Starman dives straight into that mystery by ...

From gamma ray bursts and supernova explosions to black holes and unknown alien life, we rank the scariest things in the ...

We’ve found lots of “habitable” worlds but we don’t know what factors are needed for life. There are lots of reasons to search for planets around other stars—exoplanets. A big one is to find other ...