What Is The Composition Of The Atmosphere On Mercury?
Mercury has an atmosphere comprised of helium, hydrogen, oxygen, potassium, and sodium. The last two are believed to make up about 50% of Mercury’s atmosphere. Because of it’s magnetosphere it is able to capture ions from solar winds constantly replenishing it’s supply, which helps make up for the fact it loses so much due to it’s closeness to the sun. It also gets a steady supply of potassium and sodium from meteorites that impact it’s surface.
