Science, Maths & Technology
In the night sky: Orion
...central protostar now passes through a flattened region surrounding it called an accretion disc. Figure 8 shows a small region of Orion, where a hot young protostar is picked out by the light it is radiating at infrared wavelengths. At the same time, as material falls onto the equatorial regions of the protostar, powerful jets of material are ejected from its poles....