On Thursday, 22 March observers in the British Isles with clear skies can see the 5½-day-old setting crescent Moon pass in front of first-magnitude star Aldebaran in the constellation of Taurus soon after 11:30pm GMT. Depending on where you live in the UK, you might just see the star reappear again shortly before the pair set.
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.
Set your alarm for 6am GMT if you wish to see three naked-eye planets in the UK dawn sky this week. Find a location that offers an unobstructed view of the horizon from southeast to south and let the waning Moon be your guide to locating Jupiter, Mars and Saturn on successive mornings from 7 to 11 February.
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!
Observers in the UK with clear skies on the night of 30—31 December 2017 can see the 12-day-old waxing gibbous Moon glide through the Hyades cluster in Taurus, occulting a number of naked-eye stars along the way, culminating in the disappearance and reappearance of first-magnitude star Aldebaran in the small hours of New Year’s Eve.
Many will be looking skyward to see terrestrial pyrotechnics this Bonfire Night, but if you own a small telescope and can escape the light pollution, you can see the waning gibbous Moon hide three naked-eye stars in Taurus on the night of 5—6 November, culminating in first-magnitude star Aldebaran in the small hours of Monday morning.
Observers in the British Isles and Western Europe should look low to the east about an hour before sunrise on Wednesday, 18 October to see the slim crescent of a very old Moon close to the brightest planet, Venus. Mars is also nearby for the keen-eyed among you, but don’t leave it too late or the growing twilight will drown out the Red Planet.
© 2019 Pole Star Publications Limited