http://astronomy.lamost.org/bbs/viewthread.php?tid=21&a…
日期: 2009 年 10 月 13 日
sparked my dig into this issue
sparked my dig into this issue
椭圆星系
Observational surveys of elliptical galaxies at high redshift have in recent years revealed a further interesting fact: ellipticals at high redshift appear to be much smaller in size than those in our local Universe, but have about the same mass and density of stars.