Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.

U.S. team of researchers detected signs of two chemicals in the planet's atmosphere long considered to be "biosignatures" ...

A herd of African elephants instinctively formed an "alert circle" to protect the younger elephants at the San Diego Zoo Safari Park as a 5.2-magnitude earthquake shook Southern California on Monday.

For the first time, scientists have found strong evidence of a "polar planet"—a planet whose orbit is tilted at 90 degrees ...

Further studies are needed to determine whether K2-18b, which orbits a star 120 light-years away, is inhabited, or even ...

The exoplanet K2-18b could harbor a massive ocean, but scientists will need to study the planet more to see if it’s really ...

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 ...

With the James Webb Space Telescope, astronomers say they are working to confirm potential evidence of life on a distant ...

Astronomers announced Thursday that they had detected the most promising "hints" of potential life on a planet beyond our solar system, though other scientists expressed skepticism. There has been ...

Observations by the James Webb space telescope find possible biological activity on a giant planet 124 light-years from Earth ...

WASHINGTON, April 18 (Reuters) - In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above the horizon on his desert planet Tatooine.