Planetary Provocateur

Details Planetary Provocateur Planetary Provocateur

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stard..28b..16a&link_type=abstract

StarDate magazine, vol. 28, no. 2, p. 16-19

Astronomy and Astrophysics

Astronomy

Scientific paper

Theories of how the planets form are being tested in the laboratory. One theory says that the immediate source of material to build planets comes from rocky, icy protoplanetary disks. Colliding iceballs in the laboratory reveals that spheres of ice almost never stick together, but organic molecules, when added to the mix, increase the "stickiness" of the ice by a hundredfold. Then the gravity of the larger object favors planet growth. Predicting what planet formation in space might look like gives astronomers specific characteristics to look for in space.

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