Atmosphere of Earth and balloons, and too low to permit orbital spacecraft. The mesosphere is mainly accessed by sounding rockets and rocket-powered aircraft. The stratosphere is the second-lowest layer of Earth's atmosphere. It lies above the troposphere and is separated from it by the tropopause. This layer extends from the top of the troposphere at roughly above Earth's surface to the stratopause at an altitude of about . The atmospheric pressure at the top of the stratosphere is roughly 1/1000 the pressure at sea level. It contains the ozone layer, which is the part of Earth's atmosphere that contains relatively high concentrations of
The World We Live In (Life magazine) The World We Live In (Life magazine) The World We Live In appeared in the pages of LIFE magazine from December 8, 1952, to December 20, 1954. A science series, it comprised 13 chapters published on an average of every eight weeks. Written by Lincoln Barnett, "The World We Live In" spanned a diverse range of topics concerning planet Earth and universe, and employed the talents of countless artists and photographers. These included, among others, cameramen Alfred Eisenstaedt and Fritz Goro, and artists Rudolph Zallinger and Chesley Bonestell. "The World We Live In" was introduced to Life's readership as "the