NASA/ESA Hubble Space Telescope, Gemini North telescope and NASA Infrared Telescope Facility observations of Neptune and ...

A new study rules out the existence of global oceans of water on Neptune-like planets such as K2-18b, finding their water ...

Astronomers using the Hubble Space Telescope have uncovered the remains of a frozen, Pluto-like world being devoured by a ...

New simulations suggest sub-Neptune planets may be drier than thought, challenging the "water world" hypothesis and reshaping ...

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an hour before they found the Neptune. That was in 1846.

WASHINGTON (Reuters) -Astronomers using the Hubble Space Telescope have observed a white dwarf - a highly compact stellar ...

A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their ...

It's a scene that could evoke popular fantasy stories, with sparkling stars shining above misty mountaintops, but the James Webb Space Telescope image you see above is of a very real part of our ...