Alcor versus Mizar

celestial objects May 08, 2021


Alcor and Mizar are two optical double stars located in the handle of the Big Dipper asterism (Ursa Major Constellation).  This pair of visual binary stars can both be seen with the unaided eye even in areas that have light pollution. These stars were once used as an ancient eye test, but with advanced technology, astronomers have discovered that there is more here than meets the eye.



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