Looking for a sky event this week? Check out our full Sky This Week column.  May 31: Blue Moon, red star Mercury is at its best for the year. It’s now easy to spot in the evening sky, already 10° above the western horizon 30 minutes after the Sun sets. Tonight, it shines at magnitude –0.5 andContinue reading "The Sky Today on Monday, June 1: Mercury at its best"

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