| compact galaxy | has definition A galaxy similar to an N galaxy but with no disk or nebulous background. It is an object of high surface brightness which appears slightly nonstellar on photographs and which has a larger redshift than normal stars in our Galaxy. Nearest "compact" galaxy is M32. |  |
| is a kind of galaxy |  |
| galaxy | has number of stars 106 to 1012 |  |
| has catalog galaxy catalog |  |
| celestial body | has spectra |  |
| physical object | has location or center of gravity |  |
| has angular momentum |  |
| has mass |  |
| has velocity |  |
| has momentum |  |
| has temperature |  |
| has volume |  |
| has extent |  |
| has material |  |