protogalaxy | has definition A galaxy in the process of formation. None are observed nearby, indicating that all or most galaxies formed long ago. | ![has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:31:10.0 has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:31:10.0](facet.gif) |
has definition A galaxy during the early phase, before it has developed its present shape and mix of stars. | ![has source: Silk, J. 1990 The Big Bang, W. H. Publishers, New York, 2001-09-27 09:31:10.0 has source: Silk, J. 1990 The Big Bang, W. H. Publishers, New York, 2001-09-27 09:31:10.0](facet.gif) |
is a kind of galaxy | ![2001-09-27 09:31:10.0 2001-09-27 09:31:10.0](facet.gif) |
galaxy | has number of stars 106 to 1012 | ![2001-09-27 09:31:09.0 2001-09-27 09:31:09.0](facet.gif) |
has catalog galaxy catalog | ![2001-09-27 09:31:09.0 2001-09-27 09:31:09.0](facet.gif) |
celestial body | has spectra | ![2001-09-27 09:30:09.0 2001-09-27 09:30:09.0](facet.gif) |
physical object | has location or center of gravity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has angular momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has mass | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has velocity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has temperature | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has volume | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has extent | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has material | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |