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Lunar soil typically refers to only the finer fraction of lunar regolith, which is composed of grains 1 cm in diameter or less, but is often used interchangeably. [1] Lunar dust generally connotes even finer materials than lunar soil.
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].
However, standard usage among lunar scientists is to ignore that distinction. [citation needed] "Lunar dust" generally connotes even finer materials than lunar soil, the fraction which is less than 30 micrometers in diameter. The average chemical composition of regolith might be estimated from the relative concentration of elements in lunar soil.
The lunar material would be bound by heating to 1,200 to 1,500 °C (2,190 to 2,730 °F), somewhat below the melting point, in order to fuse the nanoparticle dust into a solid block that is ceramic-like, and would not require the transport of a binder material from Earth.
Gene Cernan on the Moon in the Apollo 17 lander with lunar dust stuck on his suit. Lunar dust is highly abrasive and can cause damage to human lungs, nervous, and cardiovascular systems. [1] Lunar habitation is any human habitation on the Moon. [2] Lunar habitation is provided by surface habitats, possibly as part of a moonbase. [3]
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The Lunar Atmosphere and Dust Environment Explorer (LADEE; / ˈ l æ d i /) [5] was a NASA lunar exploration and technology demonstration mission. It was launched on a Minotaur V rocket from the Mid-Atlantic Regional Spaceport on September 7, 2013. [ 6 ]
The entrance aperture was deployed upwards to measure the downward flux of gases at the lunar surface. [4] A nylon dust screen covered the upward-facing aperture to protect it during mission surface activities. This dust screen was pulled back by radio command after the crew had taken off and the seismic charges had been detonated.