Physical Processes and Timescales in Planet and Small-Body Accretion
Abstract
A series of processes in the solar nebula transforms infallen interstellar grains into planets. Somewhat surprisingly, samples of planetary material from the very first stages of this processing and aggregration were preserved, and are accessible for study in the terrestrial laboratory. These are the chondritic meteoroids, which passed the last 4.5 Gyr safely stored in asteroids. Thermal processing of interstellar grains, sticky agglomeration of chondrules, Goldreich-Ward instability, and gravitational accretion of planetesimals into planets are discussed.
- Publication:
-
Origins of Solar Systems
- Pub Date:
- 1988
- Bibcode:
- 1988oss..conf...39W
- Keywords:
-
- Chondrule;
- Meteoritic Composition;
- Nebulae;
- Planetary Evolution;
- Agglomeration;
- Aggregates;
- Gravitational Effects;
- Inclusions;
- Lunar and Planetary Exploration