Observing

See Mercury and Venus in the pre-dawn sky from the Southern Hemisphere

10 April 2019 Ade Ashford

Mercury attains a very favourable western elongation of almost 28 degrees from the Sun on 11 April, which means that the innermost planet is a morning object in the eastern sky before sunrise. Antipodean skywatchers are in the enviable position of being able to see Mercury and Venus close together for several mornings in a dark sky before the onset of astronomical twilight.

Observing

Don’t miss Mercury’s best evening show of the year at dusk from 20 February

18 February 2019 Ade Ashford

The innermost planet’s best evening showing of the year for northern observers occurs during the fortnight starting 20 February. Skywatchers will get optimal views by sourcing a location that offers an unobstructed view of the horizon from west-southwest through west at the end of civil twilight, which is about 40 minutes after sunset for the heart of the British Isles.

News

Ariane 5 launches two satellites on 7-year voyage to Mercury

21 October 2018 William Harwood

A powerful European Ariane 5 rocket blasted off from French Guiana late Friday and boosted a pair of satellites into space for a seven-year plunge into the inner solar system, a voyage requiring seven planetary flybys to slow down enough in the sun’s gravitational clutches to slip into orbit around hellish Mercury.

Observing

See innermost planet Mercury’s favourable dawn show

22 August 2018 Ade Ashford

Mercury attains its maximum westerly elongation from the Sun on 26 August, meaning that the innermost planet is currently well placed for observation from the UK and Western Europe in the eastern sky around 40 minutes before sunrise. In addition to those in the evening sky, you might just see all five bright naked-eye planets this month!

Observing

See Mercury’s very favourable dawn display under southern skies

25 April 2018 Ade Ashford

Have you ever seen the closest planet to the Sun? If you wish to tick Mercury off your To-See list, particularly if you live in the Southern Hemisphere, now until the middle of May is the time to be scrutinising the eastern sky about an hour before sunrise. Mercury also has a close encounter with an old crescent Moon on 14 May.

Observing

See Mercury at its best, Venus and a young Moon in the March evening sky

12 March 2018 Ade Ashford

Mercury attains a greatest easterly elongation of 18 degrees from the Sun on 15 March, the innermost planet’s best evening showing for Northern Hemisphere observers for the entire year. From 12–20 March, planets Mercury and Venus remain just 4 degrees apart low in the west 45 minutes after sunset as seen from the British Isles.

Observing

See the Moon and planets gather at dawn

3 January 2018 Ade Ashford

It currently pays to be an early riser if you wish to view the planets, for it’s all happening at dawn in the skies of Western Europe. Find innermost planet Mercury, see a near miss of Mars and Jupiter on 7 January, then a fabulous binocular conjunction of the waning crescent Moon, the Red planet and Jupiter on 11 January!