gravity

A pair of galaxies in the constellation Eridanus have been warped and twisted into a colossal, glowing ring of stars by the intense gravitational forces between them following a chaotic merger.

An uneven distribution of stars in several nearby clusters may offer evidence of MOND – a controversial theory of gravity that disputes Newton and rejects the existence of dark matter.

A new study has revealed that the weird parallel grooves on the surface of Mars' largest moon Phobos could be a sign that the Red Planet's gravity is ripping the satellite apart.

Albert Einstein’s theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales.

The universe may be vast, but researchers have multiple points of evidence that reveal its shape.

A new image using data collected by NASA's James Webb Space Telescope shows off one of the most perfect "Einstein rings" ever captured.

Here's a look at whether Earth is getting closer to or farther from the sun, why that's happening and what effects it might have on our planet.

How one earth (or space) can a person experience microgravity?

Scientists tested seven different predictions, in one of the most ambitious and involved challenges to general relativity ever undertaken — and the theory passed with flying colors.

Here are nine equations that altered the course of history.