Previously considered an airless ball, an Earth-sized world orbiting a red dwarf some 40 light-years away may have an ...

An ancient exoplanet dated at 12.7 billion years old could have formed over a long period in a giant disk of gas, according ...

Currently, 5,788 exoplanets have been confirmed in 4,326 star systems, while thousands more candidates await confirmation. So far, the vast majority of these planets have been gas giants (3,826) or ...

Mercury is the least explored of the four rocky planets in the inner Solar System. It wasn’t until 2011 that NASA’s MESSENGER ...

The odds of us finding extraterrestrial life anytime soon are pretty slim. But if there's anything that can deliver us a sign ...

This is largely because virtually all Earth-like planets discovered within 50 light-years of Earth orbit red dwarf suns ... Some notable examples include (in order of distance): As you can ...

The universe is full of surprises—like planets so massive they outsize some stars. Explore the fascinating size comparisons ...

It seems 2025 will have a strong start, too, with a planet parade just a few weeks into the new year. A planet parade is when ...

New observations show that newly formed planets close to a star help shepherd dust and gas to create more planets farther out ...

Hubble Space Telescope observations of white dwarf star G238-44 has shown that it is "consuming both rocky-metallic and icy ...

The Webb telescope has confirmed a controversial discovery made over 20 years ago with the Hubble Space Telescope.

An object up to dozens of times the mass of Jupiter flying through our solar system may have disrupted planetary orbits.