NASA's PUNCH sun-studying mission has seen first light — and the team says all four instruments are indeed working as ...

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

The company’s ambitious new Sunbird design aims to harness nuclear fusion in space, despite the fact that commercializing ...

In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above the ...

Astronomers have detected possible chemical signs of life on a faraway planet. But they caution much more work is needed to confirm their findings.

A cargo plane flew the HALO module to the U.S. from Turin, Italy, where it was constructed by the company Thales Alenia Space ...

Spring in the northern hemisphere brings with it the promise for the Lyrids, the first good meteor shower of the season.

Astronomers have found thousands of exoplanets — worlds beyond our solar system. Most of them are in single-star systems, ...

The peer-reviewed report in the Astrophysical Journal Letters presents more questions than answers, acknowledges numerous ...

Photographer extraordinaire Don Pettit is about to return to Earth following a seven-month stay aboard the space station. Take a moment to enjoy his best work.

NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday ...

"A planet orbiting not just a binary, but a binary brown dwarf, as well as being on a polar orbit, is rather incredible and ...