How dark is your sky?

The beauty of sky gazing is how simple and adaptable it is. Begin whenever you have some time outside or near a window where you can see the sky, even if it’s just a patch. When you feel emotionally overloaded or flat, try it for a few minutes at a time.

From colliding galaxies to supermassive black holes, we take a look at some of the strangest sights in the universe

Autumn is a brilliant time to get outdoors, connect with nature and boost your sense of wellbeing. Tune into meditative forest-bathing, wild swim in the sea and raise your eyes to the mystery of star-studded skies. Or simply walk, reflect and get creative, says Kerry Fowler

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

According to a growing number of scientists and doctors, many of us are no longer getting enough darkness in our lives. As human animals, we rely on the dark just as much as the light – it keeps our c

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