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| physical object > natural object > celestial body > nebula > H II region > H II condensation |
| H II condensation | ||||
| subject | fact | |||
| H II condensation | has definition A high-density H II region. | ![]() |
| is a kind of H II region | ![]() | |
| H II region | has composition ionized hydrogen | ![]() |
| nebula | is a part of gas | ![]() |
| has catalog nebula 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 | ![]() |