Observing

See the Moon and largest planet Jupiter get close on 14 March

12 March 2017 Ade Ashford

Jupiter is now less than a month from opposition (7 April), so it’s very much open season for the Solar System’s largest planet. If you’re unsure where to find it, the rising 17-day-old waning gibbous Moon passes just two degrees from Jupiter on the UK evening of 14 March. Virgo’s brightest star, first-magnitude Spica, makes it a great binocular triumvirate.

Observing

Waning crescent Moon joins Jupiter in the dawn sky of 25 November

18 November 2016 Ade Ashford

Around 6:30am GMT on Friday 25 November, as nautical twilight starts for the centre of the UK, the 25-day-old waning crescent Moon lies just 2½ degrees away from largest planet Jupiter low in the southeastern sky. This juxtaposition of the two brightest objects in the dawn sky will be nicely framed in a typical binocular.

Observing

See the old crescent Moon close to Jupiter in the morning sky

27 October 2016 Ade Ashford

UK observers with a clear sky an hour before sunrise on Friday 28 October should look very low in the east-southeast to see the slim crescent of the 27-day-old Moon less than four lunar diameters away from largest planet Jupiter. The Moon and Jupiter are also joined by third-magnitude double star gamma (γ) Virginis, commonly known as Porrima.

Observing

Jupiter and Venus get extra close in the evening sky

27 August 2016 Ade Ashford

On Saturday 27 August at 22:32 UT (11:32pm BST), a spectacularly close conjunction occurs between Jupiter and Venus just 22 degrees west of the Sun in the constellation of Virgo, when the planetary pair are just 4 arcminutes, or one-fifteenth of a degree, apart. Here is our guide to the best locations and times to view this rare event.

News

The curious case of Earth’s leaking atmosphere

8 July 2016 Astronomy Now

Overall, about 1 kg of material is escaping our atmosphere every second. Every day, around 90 tonnes of material escapes from our planet’s upper atmosphere and streams out into space. Although missions such as ESA’s Cluster fleet have long been investigating this leakage, there are still many open questions. How and why is Earth losing its atmosphere?

Observing

See the crescent Moon get close to Jupiter on Saturday, 9 July

6 July 2016 Ade Ashford

If the excitement of the Juno spacecraft’s arrival at Jupiter has prompted you to seek out the solar system’s largest planet, then the 5-day-old cresent Moon acts as a convenient celestial guide during the evening of Saturday, 9 July when it makes a close pass of the gas giant. Here’s our guide to where and when to see this beautiful celestial pairing.

News

NASA’s Juno spacecraft closing in on Jupiter for 4 July orbit insertion

25 June 2016 Astronomy Now

On 4 July, NASA will fly a solar-powered spacecraft the size of a basketball court within 2,900 miles of the cloud tops of our solar system’s largest planet, Jupiter. Over the past two weeks, several milestones occurred that were key to a successful 35-minute burn of its rocket motor, which will place the robotic explorer into a polar orbit around the gas giant.

Observing

See the Moon and Jupiter get close on 11 June

10 June 2016 Ade Ashford

As dusk fades to dark on Saturday, 11 June, observers in the British Isles should look low in the western sky to see the 7-day-old waxing crescent Moon and Jupiter less than 3 degrees apart, within the same binocular field of view. Get your observations in now as the solar system’s largest planet is poised to leave the celestial stage during the summer.