Inside the sky at night

If there’s one thing I love, it’s a misnomer. Shooting stars, planetary nebulae, guinea pigs… none of them does what it says on the tin. Another great example is the term ‘physical constant’. These ar

I looked out of the window before bed while on holiday in Orkney in mid-August and was delighted to see my first-ever noctilucent cloud display! The reflections in the still waters of the Bay of Firth

In the 17th century, the great maritime nations were vying to solve a puzzle that had confounded philosophers for many centuries: how to determine exact positions on the Earth’s surface. And in Britai

Our showcase of finalists from the ZWO Astronomy Photographer of the Year Awards 17

Thursday 2 Dwarf planet Ceres reaches opposition in the constellation of Cetus, shining at mag. +7.6. Find further details on page 47. Friday ▶ 3 Tonight and the night of 17/18 October are good times

TRAPPIST-1 is a red dwarf star located about ...