Which of the following statements about quasars is wrong?
选项:
A:They have a very strong and wide emission line in their spectrum.
B:Their spectral lines have a very large blue shift, which is the largest blue shift among known celestial bodies.
C:There is strong ultraviolet radiation, so most quasars are blue.
D:Quasars are the general term for quasar power sources and blue stars.
发布时间:2024-05-19 10:58:59