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Astro Bob

What Do Moon And Earth Have In Common? Big Craters!

18 Sep 2018, 21:13 UTC
What Do Moon And Earth Have In Common? Big Craters! Wikimedia

Last night the moon shone to the left of Saturn. Tomorrow night, it will be in conjunction with Mars, gliding only 4° to its north. Although fading a bit, Mars is still a couple tenths of a magnitude brighter than Sirius, the brightest star, and maintains its eye appeal as we head toward the first day of fall. When you’re out moongazing, a pair binoculars magnifying 10x will easily show craters, particularly along the terminator, where sunlight strikes the moon’s surface at a glancing angle. The combination of sun-struck highlights and long shadows helps to outline and clearly define these enormous impact holes.

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