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Atmosphere of Mercury

3:32

Mercury 101 | National Geographic

3:16

What would It be like to stand on Mercury's surface?

2:22

What Is Mercury's Atmospheric Pressure? : Planets, Stars & More

Discovery of Alien Planets in our Solar System - Planets that Exist Outside Earth’s Solar System

3:42

In-depth review of atmospheric mercury - Video abstract 37038

Mercury has a very tenuous and highly variable atmosphere containing hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor, with a combined pressure level of about 10−14 bar. The exospheric species originate either from the Solar wind or from the planetary crust. Solar light pushes the atmospheric gases away from the Sun, creating a comet-like tail behind the planet.
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    • Composition 

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