Millions of invisible particles from the sun and distant space stream through our bodies every second. Most pose little risk ...

It seems to be orbiting a brown dwarf that weighs in at about 37 Jupiter masses. Should the finding stand, the object would ...

A brown dwarf orbits the star, while the newly detected object appears to circle the brown dwarf, creating an unusual ...

Astronomers have uncovered evidence of a bizarre, potentially historic discovery: the first moon ever detected beyond our ...

Mars is the obvious frontrunner, but it is far from an easy second home. The other candidates reveal just how rare truly human-friendly conditions may be.

The physicist on discovering his love of space, the influence of Carl Sagan and why the biggest threat to our future is ourselves ...

Planetary systems like our solar system are born within a disk of gas and dust (protoplanetary disk) surrounding a newly ...

Astronomers watched water clouds grow thicker and thinner on a world trillions of miles away. It's familiar weather in a ...

As far-fetched as it may seem, quirks of orbital mechanics could allow hundreds of planets to be packed around a star ...

What if we could turn the Red Planet green? The idea of Mars made verdant with grasses, trees and other Earthly life-forms ...

For most of human history, our Sun’s occasional tantrums have been of little concern to those of us living on Earth’s surface ...

A superhabitable world may be out there, with scientists pointing to super-Earths around K-dwarf stars as promising targets.