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.
LRO has collected a treasure trove of data with its seven powerful instruments, making an invaluable contribution to our knowledge about the Moon.
On 14 September 2015, gravitational waves produced by a pair of merging black holes gently rattled space-time in the vicinity of Earth. Less than half a second later, NASA’s Fermi Gamma-ray Space Telescope picked up a brief, weak burst of high-energy light consistent with the same part of the sky. Analysis of this burst suggests that the events are connected.
Friday, 27 July sees the second total lunar eclipse of 2018, which also happens to be the longest of the 21st century. Observers in Antarctica, Australasia, Russia, Asia, Africa, Scandanavia, Europe, Central and Eastern South America will see the event. The Moon rises at mid-eclipse as seen from the British Isles, some 6 degrees north of Mars at opposition.
NASA’s Interface Region Imaging Spectrograph satellite, or IRIS, and the Japan Aerospace Exploration Agency’s (JAXA)/NASA’s Hinode solar observatory, have just made a significant step towards understanding why the corona — the outermost, wispy layer of the Sun’s atmosphere — is hundreds of times hotter than the lower photosphere, which is the Sun’s visible surface.
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