Facts and statistical information about planets , moons , constellations , stars , galaxies , and messier objects -包括關于有關基礎知識的介紹專題論文數(shù)據(jù)表有關消息,論壇和聊天室。
百科解釋
The Messier objects are a set of astronomical objects first listed by French astronomer Charles Messier in 1771.