Right now, galaxies are merrily churning away, converting nebular gas into stars.

现在，系正在愉快地旋转着，转化为恒。

A few billion years after the nebular gas runs out the only stars left will be those long-lived red dwarfs.

在耗尽几十亿后，剩下的恒那些长寿的红矮。

In 1873 French scientist, Edouard Roche proposed that the Moon simply formed alongside the Earth out of essentially the same nebular cloud of particles and gasses.

1873法国科学家爱德华·洛希提出月球只在地球旁边形成的，本质上由相同的粒子和的构成的。