Alpha Centauri Has an Earth Sized Planet!

From Bad Astronomy:

The planet orbits close in to Alpha Cen B, and is technically called Alpha Centauri Bb – planets have lower case letters assigned to them, starting at b. Its mass is only 1.13 times the Earth's mass, making this one of the lower mass planets yet found! But don't get your hopes up of visiting it – its period is only 3.24 days, meaning it must be only about 6 million kilometers (less than 4 million miles) from its star. Even though Alpha Cen B is a bit cooler than

planet incredible Astronomy - 6678493952

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