The Sky This Week from November 10 to 17: Catch Comet Lemmon

Friday, November 10Comet C/2023 H2 (Lemmon) passes closest to Earth late today, coming within 0.19 astronomical unit, or AU, of our planet. (One AU is the average Earth-Sun distance of 93 million miles [150 million kilometers].) That means the comet will be at its brightest for the next few days; it’s recently been reported atContinue reading “The Sky This Week from November 10 to 17: Catch Comet Lemmon”
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