The giant asteroid made waves across the world last year when it came whizzing past Earth - with some experts convinced it ...

NASA's proposed Habitable Worlds Observatory will be designed for robotic repairs instead of astronaut servicing. The ...

The scientist has outlined the 'potentially devastating and irreversible long-term impacts' of unknown organisms in space ...

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

The curious minds at What If explore what would happen if octopuses were actually aliens from outer space.

A new study proposes examining Mars and other space samples on the Moon before bringing them to Earth, arguing it would ...

British sci-fi television is among the most influential in the genre, and this forgotten series from the 1970s is a part of ...

Australia's space agency said there's a completely rational, albeit cosmic, explanation behind the mysterious orbs that ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

The Fantastic Four #91 is a fun time travel fakeout story, and here is why you should want to own this classic Marvel Comics ...

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.