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Terms for subject Astronomy (299 entries)

Orion Molecular Cloud	OMC
Outer Wall	OW
Partial Lunar Eclipse	PLE
pc	parsec
Personal Solar Telescope	PST
PET	Pentaerythrital
Photon Activity Rate	PAR
Pine Bluff Observatory	PBO
Planetary Contrast	PC
Potentially Hazardous Asteroid	PHA
Principal Galaxy Catalog	PGC
Pulsar Network Exchange	PNX
Pulsed Neutron Source	PNS
Quail Hollow Observatory	QHO
Quasi Stellar Radio Sources	QSRS
Quasi Zenith	QZ
Radio- Quiet Quasar	RQQ
Rattlesnake Mountain Observatory	RMO
Recording Doppler Comparator	RDC
Reflection Nebulosity	RN