Astronomers have spotted a Saturn-sized world drifting through a region of space that theory once said should be almost empty ...

The Antarctic seafloor is one of the last truly unseen places on Earth, and the machines we send into that darkness are ...

Chris Pratt has not starred in many flops, but his biggest sci-fi flop is streaming for free right now for fans to see.

From Galaxy Quest to Minority Report, Tubi has science fiction movies of every flavor — and they're all free to stream.