The formation of the outer planets

Details The formation of the outer planets The formation of the outer planets

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..38...29h&link_type=abstract

Astrophysics and Space Science, vol. 38, Nov. 1975, p. 29-37.

Astronomy and Astrophysics

Astrophysics

12

Cosmology, Neptune (Planet), Planetary Evolution, Uranus (Planet), Ammonia, Energy Dissipation, Granular Materials, Hydrogen, Methane, Planetary Composition, Planetary Temperature, Water Flow

Scientific paper

One of the outstanding problems in planetary cosmogony is to account for the depletion of hydrogen in the outer planets, Neptune and Uranus. It is suggested that these planets were originally similar to the major planets, but settling towards grain centers, enriched by substances such as methane, ammonia, and water because of the low temperatures, released enough energy to cause evaporation of most of the hydrogen.

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