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User:Vishwasshrikhande/Books/Astronomy

From Wikipedia, the free encyclopedia
Astronomy
Observational Astronomy
Radio astronomy
Infrared astronomy
Optical astronomy
Ultraviolet astronomy
X-ray astronomy
Gamma ray astronomy
Astronomical object
Galxy
Galaxy
Spiral galaxy
Barred spiral galaxy
Lenticular galaxy
Elliptical galaxy
Ring galaxy
Irregular galaxy