Astronauts Steven Smith and John Grunsfeld, appear as small figures in this wide-angle photograph from December 1999, taken ...

Researchers traced long, bright radio pulses, combined with X-rays, to an intriguing cosmic object 15,000 light-years from ...

ASKAP J1832 pulses every 44 minutes in both radio and X-rays—something never seen before—hinting at an entirely new type of star or system. ASKAP J1832 is part of a rare group of space objects that ...

LIGO Hanford engineers swap out a fiber cable in a vacuum squeezer during the October 2019 commissioning break at the ...

Astronomers have discovered a strange new object in our Milky Way galaxy. The celestial object is emitting X-rays around the ...

A brilliant meteor streak is captured as it plunges through Earth's atmosphere over Kitt Peak National Observatory in Tucson, ...

Fifteen thousand light years away something is semaphoring into space. And scientists are eager to solve its riddle.

Scientists have long puzzled over a discrepancy in how fast the universe is expanding, but new, sharper data from the James Webb Space Telescope may finally be solving the mystery. By refining ...

The mystery object, located just a short 15,000 light-years from Earth in our Milky Way galaxy, was spotted emitting unusual ...

The space observatory shared a ride with the four ... The advanced observatory, an 8½ foot-tall cone-shaped telescope with ...

JWST has detected the earliest galaxies in the universe, but some look “more mature” than expected. Is it time to rethink how ...