It may sound like the stuff of science fiction, but scientists have already detected a time warp.
The neutrinos enmeshed in the vast cosmic web could provide a glimpse of the earliest observable moment after the Big Bang.
A super-precise measurement of one of the fundamental constants of the universe suggests it's expanding faster now than it was in its early years.
The evidence for aliens around one of the weirdest stars in our galaxy — Boyajian's star — is not looking promising.
A mysterious cosmic signal that was detected above the North Pole could be coming from fast-spinning grains of dust.
So far, gravitational waves have found no hints of extra dimensions, but there may still be some really tiny ones lurking out there.