Astronomers see far fewer small galaxies and subgalactic gas clouds than a simple extrapolation from clusters would imply.
Astronomers see far fewer small galaxies and subgalactic gas clouds than a simple extrapolation from clusters would imply.
目前天文学家所观测到的小星系和次星系气体云，其数目远小于他们从星系团所推估出的数目。