In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a ...

Comparable to shaving foam, astronomers find the wispiest planets yet. They're in the southern "flying fish" constellation.

NASA's Transiting Exoplanet Survey Satellite or TESS has found what NASA calls the two "puffiest" worlds ever found. While they're as big as our gas giants, they're so light and airy that their ...

At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.

Astronomers have uncovered a pair of giant planets that are lighter than cotton candy. The two so-called super-puffs are the ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

Interstellar comet, 3I/ATLAS, might be one of the oldest celestial bodies ever seen, potentially forming 10 to 12 billion ...

Scientists expected Mars to be too small and too distant to matter much to Earth’s climate. Then they removed it from Solar System simulations, and Earth’s roughly 100,000-year ice-age cycle ...

Add Yahoo as a preferred source to see more of our stories on Google. (Ianm35/iStock/Getty Images Plus) The Solar System is one of the comforting constants of human existence. No matter what else we ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published in the journal Icarus, this extra world might have triggered a violent ...