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Jupiter’s Great Red Spot seems to be shrinking. Can you measure its si
2 Sunday Mag. +0.4 Saturn is 5.7° from this morning’s 82%-lit waxing gibbous Moon. Catch them together before they set at around 01:00 UT. Tuesday 4 Callisto’s shadow transits Jupiter’s disc from 07:0
1 Nov 00:00 AEST (31 Oct, 14:00 UT) 15 Nov 23:00 AEDT (12:00 UT) 30 Nov 22:00 AEDT (11:00 UT) The chart accurately matches the sky on the dates and times shown for Sydney, Australia. The sky is differ
Anton Matthews, Bristol, UK, 3 July 2025 Anton says: “Towards the end of an early morning session, I took one more look and spotted this prominence. I’d never seen, let alone imaged, one this far from
BEST TIME TO SEE: Mid-November to mid-December Saturn underwent a ring plane crossing back in March of this year, an event which sadly occurred too close to the Sun to be seen clearly. However, the op
Crater Byrgius is located in a highland region roughly midway between dark-floored Grimaldi (222km) and Schickard (227km). Under high illumination, this 88km-diameter feature is best revealed by Byrgi
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