Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Philippe Claeys, Henderson James Cleaves, Maryvonne Gerin, Daniel Rouan, Tilman Spohn, Stéphane Tirard, Michel Viso

Planetary Embryo

Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_5113-1


In Planet Formation theory, planetary embryos are solid bodies that dominate gravitationally in their Feeding Zone. Planetary embryos form from planetesimals, with the formation process leading to a bifurcated mass distribution as a result of oligarchic growth; they typically have masses of fractions of an Earth mass.

See Also


Planet formation Solar nebula 

Authors and Affiliations

  1. 1.Space Research and Planetary SciencesUniversity of Bern, Physics InstituteBernSwitzerland
  2. 2.Geophysical, Atmospheric and Planetary SciencesTel Aviv University, Raymond and Beverly Sackler Faculty of Exact SciencesTel AvivIsrael