Mercury – Astronomy Now

Don’t miss Mercury, now at its evening’s best for the year

24 April 2022 Mark Armstrong

Mercury is now visible soon after sunset in the west-north-western sky.

BepiColombo gets first glimpse of Mercury

5 October 2021 Stephen Clark

The European-Japanese BepiColombo spacecraft swept past Mercury Friday in the first of six high-speed flybys to gradually set up the probe’s trajectory for a critical manoeuvre in 2025 to enter orbit around the Solar System’s innermost planet.

Everything You Need to Know About Planet Mercury

18 August 2021 Astronomy Now

The innermost planet, Mercury, may be the smallest in the Solar System, but it’s also home to some big surprises.

Here’s your chance to spot Mercury, as it cosies up to Venus this weekend

21 May 2020 Mark Armstrong

Look to the north-west this evening (21 May), soon after sunset, to enjoy a spectacular coming together of brilliant Venus and shy and elusive Mercury.

BepiColombo flies by Earth, completing first leg of journey to Mercury

12 April 2020 Stephen Clark

Working with a reduced staff due to coronavirus-related restrictions, European Space Agency flight controllers monitored the BepiColombo spacecraft during a flyby of Earth on Friday, a maneuver that used our planet’s gravity to steer the mission on a course toward Mercury.

Scientists plan for BepiColombo fly-by despite coronavirus limitations

30 March 2020 Keith Cooper

Scientists are still preparing for the crucial fly-by of Earth by the joint European–Japanese BepiColombo mission to Mercury on 10 April, despite the COVID-19 pandemic wreaking havoc.

See the old Moon join a dawn planetary parade, 18–19 March

11 March 2020 Ade Ashford

If you’re an early riser in the British Isles, let the waning crescent Moon be your guide to three naked-eye planets – Mars, Jupiter and Saturn – at dawn on 18 and 19 March 2020. This celestial conjunction occurs in the constellation of Sagittarius where you can see all four Solar System bodies within the span of a fist at arm’s length. Look for attractive binocular conjunctions too.

Let Venus be your guide to Mercury at its best in February

1 February 2020 Ade Ashford

Mercury is poised to put on a fine evening show for Northern Hemisphere observers at dusk, attaining a greatest elongation 18.2 degrees east of the Sun on Monday, 10 February 2020. For ten evenings starting 3 February, the innermost planet and its brightest sibling, Venus, maintain an almost constant angular separation low in the west-southwest 40 minutes after UK sunset.

See Mercury at its best meet Mars in the dawn sky

18 November 2019 Ade Ashford

Innermost planet Mercury puts on its best morning display of the year for Northern Hemisphere observers from late November to early December. Skywatchers in the British Isles should find a location offering an unobstructed view of the southeast horizon about 45 minutes before sunrise to get the best views, with the Red Planet and star Spica – the brightest in Virgo – also nearby.

How to safely observe Mercury crossing the Sun on 11 November

7 November 2019 Ade Ashford

On Monday, 11 November 2019 just after 12:30pm GMT, suitably equipped observers in the British Isles can witness the start of a 3.7-hour spectacle that hasn’t been seen for three-and-a-half years — the silhouette of innermost planet Mercury crossing the face of the Sun. Here’s our online guide to observing this fascinating and comparatively rare event in complete safety.