Dunham, Theodore American astronomer at Mount Wilson Observatory who, together with Walter Adams, carried out spectroscopic observations of the planets. These helped confirm that the atmosphere of Venus is composed primarily of carbon dioxide (see Venus, atmosphere) and that methane and ammonia are predominant in the outer atmosphere of Jupiter and Saturn. Related category • ASTRONOMERS AND ASTROPHYSICISTS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |