| 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 |   |