Pegasus

The constellation Pegasus over a dark horizon at night, its four Great Square stars and the horse's neck joined by faint drawn lines and labelled 'Pegasus', with a hilltop silhouette and distant town lights below
Beginner stargazing

How to find the Great Square of Pegasus, the autumn sky's biggest signpost

Go outside after dark this week and look east. There’s a big, slightly lopsided square of four stars climbing over the rooftops, and you need nothing to find it but your eyes. That’s the Great Square of Pegasus, and for the next two months it’s the easiest landmark in the sky. Learn it once and it becomes your key to the whole autumn sky: it points the way to the Andromeda galaxy, it doubles as a ruler and a dark-sky meter, and it marks the season turning over. ...

September 13, 2026 · 6 min · Andreas Ioannou
The tilted spiral galaxy NGC 7331 with a golden central bulge, blue-white spiral arms and dark dust lanes, three smaller background galaxies scattered across the star field above it
Celestial event

SN 2026aaiv: a Type Ia supernova is brightening in NGC 7331, and how to see it

A white dwarf in the galaxy NGC 7331 tore itself apart in a thermonuclear explosion, and the light is only now reaching us, bright enough to catch in a backyard telescope. SN 2026aaiv is a Type Ia supernova in a spiral galaxy in Pegasus, about 44 million light-years away, and it’s still brightening. The ATLAS survey flagged it on September 1; by September 11 it had climbed to roughly magnitude 13.8, and observers expect a peak near 11th to 12th magnitude within a week or two. Pegasus rides almost overhead from 35°N around midnight this month, so from Cyprus the timing and the geometry both line up. If you own a telescope or a smart scope, the next couple of weeks are the window. ...

September 12, 2026 · 8 min · Andreas Ioannou