Space weather forecasters expected auroras tonight, but they arrived a night early and put on a great show till dawn. I noticed a slight glow low in the northern sky around 9:30, so I packed up the telescope and drove to a dark spot. At 10 o'clock, the crescent moon was still bright in the west and the aurora had gone faint.
That changed around 10:45. A low arc slung across the northern sk...
April 20, 2018 - 9:19am