Tag Archives: North Star

Something strange is going on with the North Star

by Rafi Letzter, LiveScience

It keeps breaking astronomer’s models of how stars are supposed to act.

Something’s up with the North Star.

People have watched the North Star for centuries. The bright star, also known as Polaris, is almost directly above Earth’s North Pole and serves as a landmark in the sky for travelers without a compass. It’s also Earth’s closest cepheid, a type of star that pulses regularly in diameter and brightness. And Polaris is part of a binary system; it’s got a dimmer sister, known as Polaris B, that we can watch circling it from Earth. 

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