Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.

Whether alien life exists in the universe may be one of science's most important questions. Now, a leading British scientist says she has a definitive answer. Dame Maggie Aderin-Pocock, a space ...

Knotted structures once imagined by Lord Kelvin may actually have shaped the universe’s earliest moments, according to new research showing how two powerful symmetries could have created stable ...

The natural complexity of the universe should phase out the possibility of some advanced civilization controlling reality itself, researchers argue. Reading time 3 minutes How do we know we’re not ...