Journey to the farthest reaches of our solar system and uncover the mysteries of Sedna, a reddish dwarf planet that orbits the Sun once every 11,400 years. Explore its strange orbit, icy surface, and ...

A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests.

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

Rocky planets like our Earth may be far more common than previously thought, according to new research published in the journal Science Advances. It suggests that when our solar system formed, a ...

No known process explains how such a carbon-heavy planet as PSR J2322-2650 b could form, according to new research. Credit: NASA / ESA / CSA / Ralf Crawford illustration Astronomers have found a ...

Astronomers have found a strange world outside the solar system that is ripe for science fiction — but it's all real. The exoplanet, dubbed PSR J2322-2650 b, has a helium-and-carbon atmosphere, ...

Scientists using NASA’s James Webb Space Telescope have observed an entirely new type of exoplanet whose atmospheric composition challenges our understanding of how this type of planet forms. This ...

There is so much to see in the night sky tonight, here's what you can look forward to. Look to the east roughly two hours before midnight tonight to see a bright waning gibbous moon, now ...