See how Relativity's Terran 1 rocket got from the 3D printer to the launch pad in these highlights. Credit: Relativity Space ...

Quasicrystals are orderly structures that never repeat. Scientists just showed they can exist in space and time.

Loved Interstellar? Discover 5 must-watch sci-fi movies featuring space exploration, mind-bending time travel and emotional ...

Physicists artificially slowed down time to reveal the bizarre Terrell-Penrose effect, a consequence of special relativity. This image from the experiment shows a sphere seemingly moving at 99.9 ...

Scientists scanning the heart of the Milky Way have spotted a tantalizing signal: a possible ultra-fast pulsar spinning every 8.19 milliseconds near Sagittarius A*, the supermassive black hole at our ...

Theoretical research led by Professor Enrique Gaztañaga of the University of Portsmouth challenges the ...

The universe has delivered the loudest gravitational wave ever recorded, and it appears to have given Einstein’s theory of ...

Scientists hope to probe the nature of general relativity through a possible pulsar found in the center of the Milky Way, ...

A record-breaking gravitational wave signal let scientists "listen" to a distant black hole merger and put Einstein's gravity to its toughest test yet.

The big bang wasn’t the start of everything, but it has been impossible to see what came before. Now a new kind of cosmology is lifting the veil on the beginning of time ...

Casimir cavities are mysterious spaces between microscopic metal plates in a vacuum. Areas of diminished energy between the plates cause them to push toward each other, as if trying to fill the ...

Researchers believe they have found the signal of a pulsar, the ancient core of a rapidly spinning star, at the center of the ...