Ever wonder exactly what sort of rocks litter the Moon’s surface in countless bright and dark blotches? Check out the U.S. Geological Survey’s new Moon map covering the entire surface of Earth’s satellite in extraordinary detail. The Unified Geologic Map of the Moon will “serve as the definitive blueprint of the Moon’s surface geology for future human missions and will be invaluable for the international scientific community, educators and the public at large,” says the USGS. The new map is based on images and data from six Apollo regional maps and observations from more recent missions, including laser altimetry for the north and south polar regions, provided by the Lunar Orbiter, and stereo observations of equatorial areas by Japan’s SELENE spacecraft. Researchers developed a unified description of the moon’s stratigraphy and resolved inconsistencies in earlier maps.
Skywatchers in the UK and Western Europe should look low to the south-southeast an hour before sunrise on 31 January to see a beautiful naked-eye conjunction of Venus, the old crescent Moon and Jupiter, all within a span of 8½ degrees. But if you have a telescope and live in just the right place, you can also see the Moon hide a double star.
Observers up for an extreme observing challenge may care to make an attempt at viewing the almost full Moon pass in front of planet Neptune soon after 8pm BST on Thursday, 15 September. The planet’s disappearance occurs at a low altitude in twilight for the British Isles, but can also be seen from a large swathe of Europe and western Russia.