A closer look at cas a

First up is the mag. +11.9 planetary nebula IC 351, located 2.3° west and 0.8° south of Menkib (Xi (ξ) Persei). Despite its small apparent size – just 8 x 6 arcminutes – it’s visible through a small s

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

It’s a source of some frustration that the last time we spotted a supernova in the Milky Way Galaxy – all the way back in 1604 – no one had a telescope to point at it. We have to content ourselves wit

1. The Hyades The V-shaped Hyades open star cluster is next to mag. +1.0 Aldebaran (Alpha (α) Tauri), the reddish eye of the Bull, a foreground star that’s not actually part of the cluster. At 153 lig

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