The discovery boosts the chances of finding extraterrestrial life.

Science has discovered around 6,000 planets, and this is the first one, other than Earth, that is rocky and has an atmosphere ...

A pair of sibling gas giants originally spotted by citizen scientists are so lightweight that their density resembles wispy cotton candy more than a standard atmosphere. The rare duo detailed today in ...

Forbes contributors publish independent expert analyses and insights. Leslie Katz covers the intersection of culture, science and tech. A yellowish-orange glow bathes Phainoterra, a planet of dramatic ...

I’m a planetary scientist who was born the year of Sputnik’s launch. Over the course of my 40-year career, I’ve witnessed not one but at least five separate revolutions that fundamentally transformed ...

WD 1856 b is the only confirmed case of a planet that survived the death of a Sun-like star. It’s a Jupiter-size world ...

Tylos (or WASP-121b) is a gaseous, giant exoplanet located some 900 light-years away in the constellation Puppis. Astronomers have used four massive telescopes in Chile to look into a planet's ...

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NASA wants to send an ambitious fleet of helicopters to soar through Martian skies—but scientists fear the endeavor could crater existing Red Planet research missions.

NASA is preparing six new airborne science missions that will investigate some of Earth’s most complex environmental changes, ...

With Mercury joining the show, all seven of Earth’s celestial neighbors will be present at dusk this week. By Katrina Miller Astute skywatchers may have already seen the striking line of planets ...

Four men who hope some day to flit from planet to planet in rocket planes were last week making preparations to leave the earth. Inventor Maurice Poirer of Burbank, Calif., fired a miniature ...