Two “superpuff” planets orbiting a sunlike star over 1,000 light-years from Earth are as big as Jupiter and as dense as ...

"Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is." ...

Researchers have now made detailed observations of a Jupiter-like exoplanet, as planets beyond our solar system are known, that has lived on for billions of years after the death of its sun-like star ...

On August 12, 2026, lucky viewers in and around Greenland, Iceland and Spain—weather allowing—will be able to see one of ...

Our researchers imagine what the world might look like in 2076, when the university celebrates its bicentennial ...

Scientists from Queen's University Belfast have led an international team in the discovery of a rare new planet, which is ...

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

In case you missed it, last week the ScienceAlert team shared their favorite science facts for you to use as conversation ...

A person standing on the largest volcano in the solar system would never know it. Olympus Mons rises 70,000 feet over Mars on ...

Astronomers have uncovered a pair of giant planets that are lighter than cotton candy—super-puffs the size of Jupiter.

Two newly identified giant exoplanets are roughly Jupiter-sized, yet their material is so diffuse that each is less dense ...