A distant planet's atmosphere shows signs of molecules that on Earth are associated only with biological activity, a possible signal of life on what is suspected to be a watery world, according to a ...

Further studies are needed to determine whether K2-18b, which orbits a star 120 light-years away, is inhabited, or even ...

Astronomers have found thousands of exoplanets — worlds beyond our solar system. Most of them are in single-star systems, like our own solar system. A few dozen orbit binary stars, dancing delicately ...

Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? Researchers show that this is not due to the random pull of the planets, but rather the ...

How can we successfully collect and return samples from Mercury and Venus to Earth? This is what a recent study presented at the 56th Lunar and Planetary Science Conference hopes to address as a pair ...

It's not the first time researchers have found a planet like the one in Star Wars, but this alien world has a particularly ...

A collection of objects just 120 light-years away is a truly gob-smacking, one-of-a-kind system. It consists of two brown ...

Astronomers have discovered the weirdest planetary system ever seen, consisting of a planet rolling around rare binary ...

April’s planetary parade has fewer planets. Only four will line up: Venus, Saturn, Mercury and Neptune. April's parade of ...

Gravity pulls us to earth, a lesson you learn viscerally the first time you fall. Isaac Newton described gravity as a ...

An Apollo-class asteroid, 2011 VG9, is approaching Earth at a staggering speed, set to pass on April 16th. While not ...