Function: noun
Date: 1913
: a galaxy exhibiting a central nucleus or barred structure from which extend curved arms of higher luminosity ― called also spiral nebula
Function: noun
Date: 1913
: a galaxy exhibiting a central nucleus or barred structure from which extend curved arms of higher luminosity ― called also spiral nebula
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012