Theoretical physicist Alex Lupsasca is pushing for a space telescope to glimpse the thin ring of light that is thought to surround every black hole.

A newly released image from the Hubble Space Telescope reveals a glowing ring of star formation in the heart of NGC 6951, a ...

Astronomers have found signs that the small icy world Chiron, orbiting between Saturn and Uranus, may be forming a new ring ...

V Sagittae’s violent mass transfer hints at an imminent nova—and a future supernova visible from Earth. Binary star systems are fairly common in the universe, as are pairs where one star is a compact ...

Researchers have found a suspected clump of dark matter lurking within the luminous halo of a well-known "Einstein ring." The ...

CubeSat satellite activates after a powerful solar storm and discovers two new and mysterious radiation belts around Earth.

Despite it’s comparative size to our star, it’s still the least massive object ever detected using gravitational lensing.

Asteroids, comets, and clouds contain complex organic molecules that form in space and might have kickstarted life on Earth ...

The gravitational interaction between the Earth and Moon has led to one hemisphere of the Moon being locked facing away from ...

Astronomers recently peered deep into space and found that an old, faint white dwarf named LSPM J0207+3331, located about 145 ...

Scientists found new evidence to strengthen the case that Enceladus, small moon of Saturn about 310 miles wide, may have conditions suitable for life.

Centuries-old trees can hold clues about global weather patterns. A new UA study unlocked some of those clues.