February 2019
S M T W T F S
« Jan    
 12
3456789
10111213141516
17181920212223
2425262728  
News for Norther Colorado and the world

Monday, February 18, 2019

Posts Tagged ‘Arctlurus’

EarthSky Tonight—Oct. 31, Arcturus is a Halloween

EarthSky Tonight—Oct. 31, Arcturus is a Halloween ghost of the summer sun

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Every Halloween – and a few days before and after – the brilliant star Arcturus sets at the same time and on the same spot on the horizon as the summer sun. What’s more, this star rises at the same time and at the same place on the horizon as the sun does during the dog days of summer. So – around Halloween – it is as if Arcturus is a fainter ghost of the summer sun. At mid-northern latitudes, Arcturus now sets about 2 ... Full Story