Earth

2 Earth-sized worlds discovered outside our solar system

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A version of this story appeared in the CNN science newsletter Theory of Wonder. to get it in your inbox, Sign up for free here. CNN – There are more than 5,000 known worlds outside our solar system. Since the 1990s, astronomers have used ground-based and space-based telescopes to search for signs of planets beyond … Read more

The second potentially habitable Earth-sized planet found orbiting a nearby star

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Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news of amazing discoveries, scientific advances, and more. CNN – NASA mission spotted An Earth-sized exoplanet orbiting a small star about 100 light-years away. The planet, called TOI 700 e, is probably rocky and 95% the size of our world. The celestial body … Read more