According to the paper laying out the research behind the discovery, "TOI-1846b is a super-Earth-sized planet, with a radius ...

“The biggest surprise, however, was that the early atmosphere of the hypothetical planet could have been dominated by carbon dioxide, methane and water — similar to that of Earth in the ...

On Wednesday (July 16), the largest Mars meteorite on Earth was auctioned off at Sotheby's in New York City for $4.3 million. The jagged, 54-pound (25-kilogram) chunk of the Red Planet is formally ...

NASA broke a big announcement today in a teleconference: A new Earth-like planet has been discovered with some striking similarities to our own. It orbits its star (which is the same size as our ...

Kepler-186f orbits an M dwarf star in the constellation Cygnus. More importantly, it's the first confirmed Earth-size, potentially habitable planet elsewhere in the universe.

The newly discovered planet is estimated to hold at least 1.3 Earth masses, which means it’s probably a rocky world like our own. And though it lies a mere 4.3 million miles or so from the ...

On the other hand, the planet TOI 270c is smaller, at about seven times Earth's mass. But it's so far away from its parent star that it's almost entirely gas, making it more like a mini-Neptune ...

The relative sizes of the three known planets in the HD 63433 system, with the young Earth-like planet with a lava surface closest to the star. The other two planets are mini-Neptunes. view more ...

Scientists think they've found a big, weird moon in a far-off star system. January 13, 2022 11:00 AM ET. ... a moon bigger than Earth that's orbiting a Jupiter-like planet.