A mysterious cluster of 60 stars may be just another Milky Way star cluster, or it may be one of the smallest galaxies ever ...

Astronomers have spotted the largest structure in the universe, a 10 billion year spanning structure that is a total mystery.

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...

Despite weighing about a million times the mass of our sun, the black hole wasn't found at the center of its host galaxy, ...

The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — ...

Astronomers have made a fascinating discovery in the Ursa Major constellation that could potentially challenge our ...

On each pass, the star kicks out one Jupiter's worth of mass from the black hole's disk. A star in a faraway galaxy is sending itself into a spiral of doom, repeatedly plunging through a disk of hot ...

In the new study, however, astronomers used the cutting-edge "Keck Planet Finder" (KPF) instrument as the W. M. Keck ...

Astronomers using W. M. Keck Observatory on Maunakea, Hawaiʻi Island have listened to the music of a nearby star, uncovering ...

They discovered a dense ring of hot ammonia gas, stretching from 200 to 700 times the distance between Earth and the Sun, ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Cosmos (or Kosmos) 482's orbit has slowly brought it closer to our planet since 1972, and now it's on the cusp of plummeting back to its home world.