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

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 ...

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

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

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

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

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

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

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