WASHINGTON (Reuters) - It is a planet astronomers say probably should not even exist. Researchers said on Monday they have spotted a truly extreme planet beyond our solar system, a blazingly hot world ...

The search for alien life often sparks the imagination with images of extraterrestrial beings and strange worlds. However, a new theory is shifting the focus—what if life elsewhere in the universe ...

New research is focusing on the sulfuric-acid clouds of Venus as a potential abode for life. The new Venus study calls for the start of a new branch of astrobiology and a new branch of organic ...

These noctilucent clouds, reflecting light from the sun after sunset, have been visible in Martian skies for the past four fall seasons. Credit: NASA / JPL-Caltech / MSSS A rover got a new view of ...

In a groundbreaking study published in The Astrophysical Journal, astronomers have discovered high-velocity gas clouds near the M83 spiral galaxy, moving at velocities that differ sharply from the ...

"Venus is a hellish place of high temperatures and crushing air pressure," scientists once said in describing conditions on the second planet from the sun, but apparently its clouds contain the right ...

Earth's surface teems with quartz. But on a giant world 1,300 light-years away, quartz zips through the planet's clouds. "We were thrilled!" David Grant, a scientist at the University of Bristol who ...