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Release No.: 2016-25
For Release: Tuesday, October 11, 2016 - 9:00am

Proxima Centauri Might Be More Sunlike Than We Thought

artist's illustration depicts the interior of a low-mass star

An artist's illustration depicts the interior of a low-mass star. Such stars have different interior structures than our Sun, so they are not expected to show magnetic activity cycles. However, astronomers have discovered that the nearby star Proxima Centauri defies that expectation and shows signs of a 7-year activity cycle.

NASA/CXC/M.Weiss