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Earth-Sized Alien Planet Found Around the Stars Next Door

Artist’s impression of a planet discovered orbiting Alpha Centauri B, a member of the triple star system that is the closest to Earth. Our Sun is visible to the upper right. (ESO/L. Calçada)

These days it seems exoplanets are being discovered nearly every week, with “super-Earths”, “hot Jupiters” and “cold Neptunes” being identified (or at least announced as solid candidates) within star systems all around our neck of the galaxy. To top it all off, today the European Southern Observatory announced that an Earth-mass world has now been found orbiting Alpha Centauri B — quite literally the “star next door.”

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