... 23.10.1998 . ... In fact, ringed by blue-tinted star forming regions and faintly visible spiral arms , the yolk-yellow center of this face-on spiral galaxy, NGC 7742, is about 3,000 light-years across. About 72 million light-years away in the constellation Pegasus, NGC 7742 is known to be a Seyfert galaxy - a type of active spiral galaxy with a center or nucleus which is very bright at visible wavelengths . ... Publications with keywords: Seyfert galaxy - active galaxy - spiral galaxy . ...