731

submitted 1 year ago by Track_Shovel@slrpnk.net to c/196@lemmy.blahaj.zone

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I actually fact checked this and it's true.

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[-] DrinkMonkey@lemmy.ca 4 points 1 year ago

Unlikely Polaris. The luminosity difference between Polaris Aa and the other two is 3 orders of magnitude. Mizar and Alcor (the doublet second from the end of the Big Dipper) has been used for centuries as a vision test. If you can see the doublet, it’s equivalent to 20/20 (or 6/6) on an eye chart.