例句與造句

1. In 2006, the Cepheid absolute luminosity was re-calibrated using Cepheid variables in the galaxy Messier 106 that cover a range of metallicities.
2. Dr . James Herrnstein of the National Radio Astronomy Observatory in Socorro, N . M ., who conducted most of the research, observed the motion of gas orbiting the center of the galaxy NGC 4258, also known as Messier 106.
3. It's difficult to find messier 106 in a sentence. 用messier 106造句挺難的