space-time

The way the fabric of space and time swirls in a cosmic whirlpool around a dead star has confirmed yet another prediction from Einstein's theory of general relativity, a new study finds.

Physicists have certainly achieved a lot, but many mysteries about the universe remain.

An ambitious new fleet of spacecraft could reveal whether space-time is smooth or chunky, and in doing so the ultimate nature of reality.

These weird defects in space-time should be out there, somewhere.

Upcoming gravitational-wave observatories both on Earth and in space could soon help solve some of the greatest mysteries in science.

Einstein's theory of general relativity has passed its most stringent test to date with flying colors, a new study reports.

The collision of two neutron stars whose gravitational waves were famously observed last August probably created a black hole, according to a new study.