Atmosphere of Mercury Atmosphere of Mercury Mercury has a very tenuous and highly variable atmosphere (surface-bound exosphere) containing hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor, with a combined pressure level of about 10 bar (1 nPa). 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. The existence of a Mercurian atmosphere had been contentious before 1974, although by that time a consensus had formed that Mercury, like the Moon, lacked any substantial atmosphere. This conclusion was confirmed in 1974
A Planet Called Treason get Lanik out of the eye of the Mueller public, as well as to prevent harm from coming to Lanik's supposed younger brother Dinte. The banishment comes in the form of sending Lanik as an emissary and spy to the Nkumai, a rival nation. Due to his radical regenerative body, Lanik has grown breasts, which makes him appear to be a woman. Using this subterfuge, he poses as an ambassador from the matriarchal nation of Bird in order to discover what the Nkumai are trading in exchange for their abundant metals, which have allowed them to dominate their region militarily.