Ethan Chappel @chappelastro.com · May 16 The Great Red Spot measures about 13,700 km wide in this image, slightly more than Earth's diameter of 12,750 km. I used the "Hello, World" image from Artemis II to make a comparison between our home and the largest planet in the Solar System.
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2026-03-30 2:48 UTC Hardware Sky-Watcher FlexTube 400P SynScan, Player One Uranus-M, Chroma Red, 550/110, Blue (pre-2019), (2x) APM Comacorrecting 1.25" ED Barlow 2.7x, ZWO ADC, Phoenix Wheel 8 x 1.25" Software FireCapture, AutoStakkert!, AstroSurface, WinJUPOS, GNU Image Manipulation Program