Charting the heavens

Ron Brecher, Guelph, Ontario, Canada, 22 November 2025 Ron says: “I used a colour camera and two Optolong filters to capture SII, Ha and OIII emissions, then processed them in the Foraxx palette. I’m

When to use this chart 1 Feb 00:00 AEDT (31 Jan, 13:00 UT) 15 Feb 23:00 AEDT (12:00 UT) 28 Feb 22:00 AEDT (11:00 UT) The chart accurately matches the sky on the dates and times shown for Sydney, Austr

Our astronomical adventure in the hills of mid-Wales starts on an unlucky note. The autumnal sunshine of earlier has been swept away by a persistent drizzle rolling across the valleys and hilltops of

The interstellar comet or spacecraft, 3I/Atlas (FT465:27) excited the world of ufology in 2025. Despite Avi Loeb’s best efforts, most experts regarded it as an unusual object but not a 33-billion-ton

It’s the question I’m asked more than any other whenever I give a talk on the history of the constellations: who invented the Southern Cross? The short answer is: no one did – or at least no individua

An unusual spacecraft reached orbit in November 2025, one that might herald the dawn of a new era. Called Starcloud-1, it was the size of a small fridge and carried an advanced NVIDIA chip designed to