protostar造句怎么写

In fact, twin jets emerging from the tip of the long, dark tendril below center are the telltale signs of an embedded protostar cataloged as Herbig-Haro 555.

The conditions in a protostar resemble far more closely in situation in red giants, most of whose volume is caught up in stormy convection.

We must continue our studies in this area to understand how the initially tiny protostar grows, layer by layer, to eventually form a massive star.