Cosmic dust, it turns out, isn’t made of miniature rocks. It’s fluff. A comprehensive analysis of data from space missions, advanced computer simulations, and innovative laboratory experiments argues ...

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation. Initially, the planet was barren and inhospitable, missing water and ...

The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are added to the count on a rolling basis by scientists from around the world, ...

Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway ...

A strange cosmic object nicknamed “The Accident” has given scientists their first glimpse of a rare silicon-based molecule long expected in the atmospheres of Jupiter, Saturn, and other giant planets.

The Kuiper Belt is loosely defined as a doughnut-shaped swath of space beginning just beyond the orbit of Neptune and extending to roughly 1,000 times the Earth-Sun distance. It’s home to untold ...

Astronomers have directly spotted a rare young planet, WISPIT 2b, still forming within the gap of a dusty ringed disk around a star like our sun—something long theorized but never observed until now.

For as long as we’ve looked up at the night sky, Mars is the one planet that has stood out from all the rest. Glowing red in the distant darkness, it has been an obsession of humans for millennia.

What would it be like to live on a super-Earth? 54 shot, 7 dead, in Chicago amid Trump's threat to deploy National Guard Hours After Giving Birth, First-Time Mom Realizes Something Is Wrong Trump’s ...

Planets are not living organisms and, like molecules, do not have to be biological. But at least one is deeply biological in a distinctive, illuminating way—one which reveals how life has consequences ...

Because all earthly life shares a common origin, finding a second tree of life would forever change humanity’s understanding of ourselves.

A new method for quantifying grandeur is reshuffling the pecking order of the planet’s most impressive peaks. Turns out Everest has steep competition.