Solar System Chatter

Earth 2.0?

Artist’s concept comparing Earth and Kepler-452b: NASA/JPL-Caltech/T.Pyle
Artist’s concept comparing Earth and Kepler-452b: NASA/JPL-Caltech/T.Pyle
We're living in the age of exoplanet discovery, with NASA’s Kepler and other missions confirming the existence of new worlds and finding new candidates nearly every day: rocky worlds, enormous gas giants, planets orbiting within a hair’s breadth of their stars. But today the Kepler team announced a particularly special discovery: the most Earth-like planet yet. Kepler-452b is the closest in size to Earth—just 60 percent larger in diameter—with a 385-day orbit within the habitable zone of a G2-type star, just like our sun.

Heather Goss is the Departments Editor at Air & Space.

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