英语翻译银河系是由我们所在的星系中至少2000亿颗星体和星云中的许多星体和星云所出的光,以及各类星际物质等汇合而成的直径

The Milky Way is by our own galaxy,the at least 200 billion star nebulae and many of the stars and nebulae out of the light,as well as all kinds of interstellar matter merge the more than 7000 light years in diameter of the giant spiral shape galaxy.S the comparatively long ago in most sparse stars stars near the halo,our solar system in which have large amount of the astral several arms of one of Orion arm,is apart from the silver heart about the halfway away.From place observation silver heart.We completely for the line of sight of dust clouds from.