Jack Brown
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1 of 2/ If you've never seen the four Galilean Moons of Jupiter directly (from inner-most to outer — Io, Europa, Ganymede, & Callisto) — take time to do so. Using modest power quality binoculars (9X or greater if you have good distance visual acuity) or a low-power telescope, you can see all four.
06:29 PM - Oct 30, 2023
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Jack Brown
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thread 2/2
2 of 2/ Watching their movement from one night to the next will re-orient your solar system POV and make you feel like a space-traveler. It's a bit of magic.

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06:29 PM - Oct 30, 2023
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