With all the sightings of strange objects in the sky, people have been wondering for decades what these things can be. Whether it’s Roswell or Area 51, people have been convinced there have been ...

Imagine taking an elevator to space. Or blasting off in a nuclear rocket. That might sound like science fiction, but scientists are racing to develop new, more efficient methods of space travel - and ...

(This program is no longer available for online streaming.) "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. Produced in ...

Miles O’Brien is a veteran, independent journalist who focuses on science, technology and aerospace. He is the science correspondent for the PBS News Hour, a producer, director, writer and ...