Track and measure sunspots

BEST TIME TO SEE: Nights of 9/10, 10/11 and 11/12 July A full Moon occurs when the Moon is opposite the Sun in the sky or, in other words, when its ecliptic longitude is 180° from the Sun. The eclipti

Since Russia launched Sputnik 1 into low Earth orbit in 1957, thousands of satellites have begun congesting the skies over our planet – something anyone shooting night-sky timelapses will be keenly aw

1 Our Moonwatch target (see page 52), the walled plain Flammarion, is well placed this evening and tomorrow evening. You can also catch it on the waning Moon on the morning of 16 August. 2 This evenin

Ed Hughes explains all that you need to know…

Mark Bailey is a freelance writer who has written for The Observer, The Times and National Geographic. marksbailey.com Many people rely on GPS apps to explore new landscapes, but with natural navigati

I’m responding to an article by Pete Lawrence in the April 2025 issue, titled ‘Flora crosses the Leo Triplet’ (Big Three, in the Sky Guide), which spurred me to have a look for this minor planet. I al