title: Mars: upper atmosphere.
abstract: The thermal structure of the upper atmosphere of Mars has been theoretically investigated. The exospheric temperature, for a pure CO(2) model atmosphere, lies between 400 degrees and 700 degrees K. The origin of the Martian atmosphere is discussed in the light of these results.
authors.forename: S H
authors.initials: SH
authors.lastname: Gross
authors.forename: W E
authors.initials: WE
authors.lastname: McGovern
authors.forename: S I
authors.initials: SI
authors.lastname: Rasool