CHAPTER IV

ATMOSPHERE AND PHYSICS OF THE STELLAR BODIES 119

Outer envelope of the stars. The large planets. Spectra. Mars, Earth, Venus, Mercury. Atmosphere impossible on the moon. The light from the Earth. The atmosphere of Mercury. The atmosphere of Venus and its Clouds. Composition of air and its change with height. Forced circulation. Troposphere and Stratosphere. Hydrogen in the highest strata of the atmosphere. Water vapour and carbonic acid in the air. “Geokoronium.” Influence of gravity on composition of the atmosphere. The air on Venus and Mars.