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| abstraction > hypothesis > theory > astronomy theory > planetary theory > accumulation theory | 
| accumulation theory | ||||
| subject | fact | |||
| accumulation theory | has definition The theory by which planetesimals are assumed to collide with one another and coalesce, eventually sweeping up enough material to form the planets. | ![]()  | 
| is a kind of planetary theory | ![]()  | |
| planetary theory | has domain planet | ![]()  | 
| theory | has validity correct or incorrect with caveats | ![]()  | 
| has author or reasearch group | ![]()  | |
| has date or a range of dates for which the theory was active | ![]()  |