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physical object > natural object > celestial body > nebula > dark nebula > Horsehead Nebula |
Horsehead Nebula (NGC 2024) | ||||
subject | fact |
Horsehead Nebula | is a part of dust | |
has synonym NGC 2024 | ||
has definition An absorption nebula in the middle of Orion. | ||
is an instance of dark nebula | ||
dark nebula | has density up to 104 particles per cm3 | |
is a part of dust | ||
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 |
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