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Apollo 17 astronauts orbiting the Moon in 1972 repeatedly saw and sketched what they variously called "bands," "streamers" or "twilight rays" for about 10 seconds before lunar sunrise or lunar sunset. Such rays were also reported by astronauts aboard Apollo 8, 10, and 15. These might have been similar to crepuscular rays on Earth. [4]
On the Moon, water (H 2 O) and hydroxyl group (-OH) are not present as free water but are chemically bonded within minerals as hydrates and hydroxides, existing in low concentrations across the lunar surface. [11] [12] Adsorbed water is estimated to be traceable at levels of 10 to 1000 ppm. [13]
The geology of the Moon (sometimes called selenology, although the latter term can refer more generally to "lunar science") is quite different from that of Earth. The Moon lacks a true atmosphere , and the absence of free oxygen and water eliminates erosion due to weather .
fStop Images - Caspar BensonSince the first moon landing in 1969, it’s long been a goal to establish lunar colonies. After all, the moon has water we could use, subterranean caves we could ...
Surveyor 7 observes levitating dust, a phenomenon named Lunar horizon glow can be seen The thin lunar atmosphere is visible on the Moon's surface at sunrise and sunset with the lunar horizon glow [1] and lunar twilight rays, like Earth's crepuscular rays. This Apollo 17 sketch depicts the glow and rays [2] among the general zodiacal light [3] [4].
In a report published in the journal Nature Geoscience on Monday, March 27, 0223, scientists announced they have discovered a new and renewable source of water on the moon for future explorers in ...
Chinese scientists have discovered a "brand-new method" of producing large quantities of water using lunar soil brought back from a 2020 expedition, state broadcaster CCTV reported on Thursday. In ...
Lunar corona A solar corona up Beinn Mhòr (South Uist). In meteorology, a corona (plural coronae) is an optical phenomenon produced by the diffraction of sunlight or moonlight (or, occasionally, bright starlight or planetlight) [1] by individual small water droplets and sometimes tiny ice crystals of a cloud or on a foggy glass surface.