Observing

See Mars get very close to Neptune at dusk on 7 December

2 December 2018 Ade Ashford

Observers in the British Isles looking due south close to 6pm GMT on Friday, 7 December will find magnitude +0.1 planet Mars about 30 degress, or a span and a half of an outstretched hand at arm’s length, above the horizon. What you won’t see unless you have binoculars or a small telescope is that magnitude +7.9 outermost planet Neptune lies just one-tenth of a degree from the Red Planet.

Observing

Let the Moon be your guide to locating planet Neptune on 9 November

8 November 2016 Ade Ashford

The penultimate 2016 occultation of Neptune by the Moon occurs on 9 November for observers in Western Asia, Eastern Europe and northernmost Africa. In Western Europe, the nine-day-old waxing gibbous Moon merely brushes by the outermost planet, but the pair will be close enough to be seen within the same field of view of a typical binocular from the UK.