77. Possible proofs of the lunar atmosphere
نویسندگان
چکیده
منابع مشابه
Quadrantids and the lunar Na atmosphere
Enhancements of the Na emission and temperature from the lunar atmosphere were reported during the Leonids meteor showers of 1995, 1997 and 1998. Here we report a search for similar enhancement during the 1999 Quadrantids, which have the highest mass flux of any of the major streams. No enhancements were detected. We suggest that different chemical-physical properties of the Leonid and Quadrant...
متن کاملCharacterizing the Lunar Particulate Atmosphere with the Autonomous Lunar Dust Observer (aldo)
Introduction: Billions of years of meteoroid bombardment have shaped the lunar surface, created and stirred the lunar regolith, and covered the moon with dust. Since the Apollo era, the particulate atmosphere and mobility of dust, have been recognized as both a hazard to human health and a challenge to equipment function and longevity. The NASA Constellation Program promises sustained human and...
متن کاملThe Lunar Atmosphere: History, Status, Current Problems, and Context
After decades of speculation and fruitless searches by observers, the lunar atmosphere was rst observed by Apollo surface and orbital instruments beginning in 1973. With the end of Apollo missions in 1972, and the termination of funding for Apollo lunar ground station observations in 1977, the eld withered for many years, but has recently enjoyed a renaissance. This renewal was initiated by the...
متن کاملAn HST Search for Magnesium in the Lunar Atmosphere
In October 1996 we used the Hubble Space Telescope's Faint Object Spectrograph to make the rst-ever mid-ultraviolet spectroscopic search for emissions from the lunar atmosphere. This spectrum revealed no emission lines, despite the fact that strong resonance emission transitions from the Al, Si, and Mg neutrals, and Mg+, are present in the bandpass. We derive 5 sigma upper limits on the atmosph...
متن کاملThe Lunar Atmosphere and Its Study by Lro
Current Understanding: The atmosphere of the Moon is extremely tenuous, with a total mass of only ~10 kg (i.e., at STP it would fit inside a large building) [1]. Since it is so thin, the lunar atmosphere is difficult to detect, and has only been partially sampled in situ on the nightside by Apollo pressure gauges & mass spectrometers (these were swamped by contamination on the dayside) [2]. Lik...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1957
ISSN: 0074-1809
DOI: 10.1017/s0074180900049524