Watch the king of the planets turn on its throne

Ground controllers have pressurised the Juno spacecraft’s propulsion system in preparation for a 5 July rocket firing by the probe’s UK-made rocket engine that will steer the spinning, solar-powered robot into orbit around Jupiter.

In the small hours of Friday, 16 October, innermost planet Mercury reaches its greatest westerly elongation from the Sun. For those of you in the UK with a flat, unobscured eastern horizon and willing to get up an hour before sunrise, the next few days provide your best opportunity to see Mercury from the Northern Hemisphere during 2015.

At the beginning of civil twilight on Monday, 13 November, observers in Western Europe and the British Isles should seek out a viewing location offering an unobstructed view very low to the southeast horizon to see brightest planet Venus and largest planet Jupiter separated by little more than half the width of a full Moon.