Bullialdus

The worst time to look at the Moon is when it’s full, right? Not necessarily. It’s true that at full Moon, sunlight hits the surface head-on, flattening the appearance of its rugged landscape of deep

Prinz is an interesting, incomplete crater you’ll find near bright Aristarchus, the brightest large crater visible on the Earth-facing side of the Moon. Unlike sharp and relatively youthful-looking Ar

Astronomers love a challenge. They place their observatories on the highest mountains, in the driest deserts, on the coldest ice shelves, beneath the deepest oceans, in orbit around Earth and the Sun,

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

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

BEST TIME TO SEE: 6, 13, 21 and 29 October at the times shown With long, dark nights settling in and Saturn favourably positioned in the sky, now’s a great time to catch an unusual view of the ringed