Observing

Bright Moon photobombs Geminid meteor shower peak on 14 December

5 December 2019 Ade Ashford

The December Geminid meteor shower is generally regarded as the richest and most reliable of the major annual shooting star displays. This year the predicted peak occurs between 2h and 23h UT (2am to 11pm GMT) on Saturday the 14th, but its bright and slow-moving shooting stars will have to contend with the glare of a nearby Moon just two days after full.

Observing

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.

Observing

Moonlight challenges Leonid meteor shower maximum on 18 November

15 November 2019 Ade Ashford

The maximum of the annual Leonid meteor shower is predicted for 11pm GMT (23h UT) on Monday, 18 November 2019. However, the famously swift, bright Leonids — some leaving persistent trails — will have to contend with the glare of a 21-day-old waning gibbous Moon close by visible from 9:30pm GMT to dawn on the 19th.

Observing

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.

Observing

Observe planet Uranus at its best in the autumn sky

27 October 2019 Ade Ashford

Have you ever seen Uranus with the naked eye? If not, moonless nights in late October and November offer ideal conditions to test your visual acuity and sky clarity. Uranus reaches opposition in the constellation of Aries on 28 October 2019 and lies 48° above the southern horizon at midnight as seen from the heart of the British Isles. Here is our guide to tracking down the seventh planet from the Sun.

Observing

Don’t miss the close flyby of bright space rock 1998 HL1, 25–29 October

18 October 2019 Ade Ashford

Their high detection rate reveals that near-Earth asteroids are commonplace, but they’re typically small, fleetingly observable and very faint. Hence an opportunity to view a large example bright enough to see in a typical backyard telescope shouldn’t be missed! Here’s our guide to tracking down 700-metre-wide 1998 HL1 between 25 and 29 October 2019.

Observing

Watch the Moon hide naked-eye star Zeta (ζ) Tauri on 19 October

11 October 2019 Ade Ashford

When a nearby astronomical body passes between the observer and a more distant object, see say that an occultation is taking place. Since the Moon is our nearest celestial neighbour, it regularly passes in front of planets and stars. Observers in the British Isles can see naked-eye star Zeta (ζ) Tauri glide behind the Moon on Saturday, 19 October 2019.

Observing

See the waxing Moon meet the outermost planet on 10 October

6 October 2019 Ade Ashford

The 12-day-old Moon lies in the same low-power binocular field as Neptune late into the evening of Thursday, 10 October 2019 when observers in the UK can find the pair highest in the southern sky against the constellation of Aquarius. The glare of the gibbous Moon will present a challenge, but well worth the attempt to find the outermost planet with modest optical aid.

Observing

See the young Moon meet the gas giants at dusk, 3–5 October

1 October 2019 Ade Ashford

Skywatchers in Western Europe and the UK should look low to the south-southwest at nautical dusk on 3 and 5 October 2019 to view the waxing Moon pass close to Jupiter and Saturn, the Solar System’s largest gas giant planets. Observers at northern temperate latitudes should make the most of any opportunities to view these planets before they are lost in twilight.