A new study suggests that the comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that had yet to gel into its own solar system.

For the first time in more than 50 years, humans are preparing to travel beyond low-Earth orbit and return to the Moon.

NASA's Hubble Space Telescope has gotten a rare peek at the aftermath of two cosmic collisions — and helped scientists solve a decades-old mystery.

A day at Uranus just got a little longer.

Scientists have confirmed what became of a star that exploded in a stunning supernova visible to Earth more than three decades ago.

One of the biggest and brightest stars in the night sky will momentarily vanish.

The Webb Space Telescope has captured the rare and fleeting phase of a star on the cusp of death.

Astronomers have discovered what appear to be massive galaxies dating back to within 600 million years of the Big Bang.

Astronomers have discovered 12 new moons around Jupiter, putting the total count at a record-breaking 92.

NASA's new Webb Space Telescope is finding bright, early galaxies that until now have been hidden from view.

Two space telescopes have captured this week's asteroid strike, the first planetary defense test of its kind.

Astronomers have discovered the farthest star yet, a super-hot, super-bright giant that formed nearly 13 billion years ago at the dawn of the cosmos.

The world's biggest and most powerful space telescope has reached its final destination 1 million miles away.

NASA's new space telescope is doing well more than a week after liftoff, following a pair of problems overcome by ground controllers.

A U.S. survey of astronomers puts the search for extraterrestrial life at the top of their to-do list for the next 10 years.

The Hubble Space Telescope should be back in action soon, following a tricky, remote repair job by NASA.

CAPE CANAVERAL, Fla. – Jupiter and its enticing moon Europa shine in a new photo by the Hubble Space Telescope. Hubble snapped the picture last month when the planet was 406 million miles (653 million kilometers) away, and the Space Telescope Science Institute in Baltimore released it Thursday. Europa, which is smaller than our own moon, appears as a pale dot alongside its giant, color-streaked gas planet. NASA plans to launch a spacecraft, the Europa Clipper, later this decade to see if conditions there might be ripe for life. ___The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education.