This graphic represents the view due east at 7pm GMT on Christmas Day 2015 as seen from the centre of the British Isles, about an hour after full darkness has descended. The rising full Moon lies in the constellation Gemini, just above magnitude +1.9 star γ Geminorum, otherwise known as Alhena. This is the first time since 1977 that a full Moon has fallen on 25 December and the next time it occurs is 2034, so hopefully it will be clear! AN graphic by Ade Ashford.December’s full Moon, the last of the year, is called the Full Cold Moon because it occurs during the beginning of winter. The instant that this month’s full lunar phase will occur is 11:11am GMT and it will rise at 4:32pm GMT as seen from the centre of the British Isles.
As you gaze up at the Christmas Moon, take note that NASA has a spacecraft currently orbiting Earth’s only natural satellite. NASA’s Lunar Reconnaissance Orbiter (LRO) mission has been investigating the Moon’s surface since 2009.How the Moon will appear on 25 December 2015. Image credits: NASA/Goddard/Lunar Reconnaissance Orbiter.“As we look at the Moon on such an occasion, it’s worth remembering that the Moon is more than just a celestial neighbour,” said John Keller, NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “The geologic history of the Moon and Earth are intimately tied together such that the Earth would be a dramatically different planet without the Moon.”
LRO has collected a treasure trove of data with its seven powerful instruments, making an invaluable contribution to our knowledge about the Moon.
The space environment around a planet plays a key role in determining what molecules exist in the atmosphere – and whether the planet is habitable for life. New research shows that Venus has an “electric wind” strong enough to remove the components of water from its upper atmosphere, which may have played a significant role in stripping Earth’s twin planet of its oceans.
If skies are clear in Western Europe on the first evening of 2018, be sure to glance up at the almost full Moon in the constellation of Gemini. If it seems a bit larger than usual then you’d be right, for the lunar orb is at its closest for the year, making the full Moon of 2 January a supermoon.
While you may not relish the prospect of waking up in the small hours most Monday mornings, observers in the British Isles and Western Europe will want to set their alarms no later than 5am GMT on 21 January to see this month’s showstopper celestial event — a total lunar eclipse of an unusually close ‘supermoon’. The total lunar eclipse is also visible in its entirety (weather permitting) from the Americas.