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en.wikipedia.org/wiki/Atmosphere_of_Mercury

Mercury's exospheric hydrogen and helium are believed to come from the Solar wind, while the oxygen is likely to be of crustal ...

www.space.com/18644-mercury-atmosphere.html

Oct 17, 2016 ... Of all the planets in the solar system, Mercury has the thinnest atmosphere, thinner than even Mars. Several components are constantly ...

www.windows2universe.org/mercury/Atmosphere/atmosphere.html

Aug 11, 2010 ... Mercury's thin atmosphere contains hydrogen, helium, and oxygen. It also has smaller amounts of sodium, potassium, calcium, and magnesium ...

spacemath.gsfc.nasa.gov/astrob/10Page7.pdf

Problem 3 – Which planet has the atmosphere with the greatest percentage of ... Mercury. 1000. 42%. 22%. 22%. 6%. 8%. Venus. 4.8x1020. 96%. 4%. Earth.

www.universetoday.com/22088/atmosphere-of-mercury

Dec 23, 2015 ... Mercury's original atmosphere dissipated shortly after the planet formed 4.6 billion years ago with the rest ... Mercury atmospheric composition:.

nssdc.gsfc.nasa.gov/planetary/factsheet/mercuryfact.html

Dec 23, 2016 ... Mercury, Earth, Ratio (Mercury/Earth). Mass (1024 kg), 0.33011 ... side) Total mass of atmosphere: <~10000 kg Atmospheric composition ...

solarsystem.nasa.gov/planets/mercury/indepth

Temperatures on Mercury's surface can reach 800 degrees Fahrenheit (430 degrees ... Because the planet has no atmosphere to retain that heat, nighttime ...

sciencing.com/chemicals-make-up-mercurys-atmosphere-8800.html

... Mercury's atmosphere. The atmospheric pressure on Mercury is ... ... Surprisingly, Mercury's atmosphere contains tiny amounts of water vapor -- 0.03 percent. Although Mercury ... What Is the Earth's Atmosphere Composition & Temperature?

www.messenger-education.org/instruments/mascs.php

The purpose of the Mercury Atmospheric and Surface Composition Spectrometer is to help determine what minerals are present on the surface of Mercury, and ...

adsabs.harvard.edu/full/1966SSRv....5..565R

It is the purpose of this paper to review the available information on the temperature, composition, and surface pressure of Mercury's atmosphere, and to discuss ...