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 ...

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 ...

"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 ...