Interstellar objects like 3I/ATLAS that have been captured in planet-forming disks around young stars could become the seeds ...

WASHINGTON, June 6 (Reuters) - Stars about the size of our sun are not the most common ones in the Milky Way. Much smaller stars are way more common - and those host the most rocky planets in the ...

A newly discovered star system is breaking records — and helping scientists unravel the mysteries of an extreme type of planet known as hot Jupiters. In a paper published Aug. 14 in the journal Nature ...

The James Webb Space Telescope has detected a possible gas giant the size of Saturn in the stellar system nearest our own ...

Astronomers have discovered an Earth-size planet that is showered with so much radiation, its atmosphere eroded away long ago, leaving it bare. Life as we know it can't exist on this blistering world, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

Astronomers have discovered an Earth-size planet orbiting an ultracool red dwarf star similar in size to Jupiter. The red dwarf, located some 55 light-years away, is 100 times less bright than the sun ...