Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets ...

NASA is ready to explore the cosmos in a whole new way, thanks to its next-generation Nancy Grace Roman Space Telescope. Scientists and engineers have spent some twenty years designing and building ...

There is no chance in hell our species will be able to reach another Earth-like planet in the Universe in the foreseeable future, so the only way we can get a sense of the habitability of such places ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets. Things mistaken for UFOs. In the search for alien life, humans have been fooled ...

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

Pioneering astronomer Carl Sagan once wrote that "The universe is a pretty big place. If it's just us, seems like an awful waste of space." On screen, the vastness of the universe and the ...