Scientists were able to measure time dilation at a distance of just a millimeter, about the width of a pencil tip.
The direct manipulation of antimatter will open up "unthinkable" possibilities in examining the fundamental makeup of our reality, scientists say.
Astronomers have been watching the full fallout of a tidal disruption event for years.
LIGO's detection of gravitational waves was an achievement comparable to Galileo’s telescope. Meet the man whose team built the detector.
A controversial theory that would overturn Einstein’s theory of general relativity could soon be tested.
It has stick figures!
This week's announcement of a second LIGO detection is likely just the start.
The LISA Pathfinder mission is testing technology for a different type of gravitational wave detector—1.5 million kilometres from Earth.
Waves traveling through expanding space-time should look different than waves traveling through static space-time.
Where does revolutionary knowledge come from?
Two of the ESA's Galileo positioning satellites wound up in the wrong orbit, but it's not all for naught.