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 ...

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.

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 ...

The image of Luke Skywalker gazing wistfully across the desert of Tatooine while a pair of “suns” set on the horizon is among ...

Astronomers have discovered a strikingly unusual exoplanet: one which orbits its host stars in a totally new way. The planet ...

In late 2017, a mysterious object tore through our solar system at breakneck speed. Astronomers scrambled to observe the fast ...

Did Copernicus borrow his cosmological theory from an earlier Muslim scientist? New research finds striking resemblance between Copernicus’s heliocentric treatise and a Muslim scientist’s cosmological ...