一个巨大的黑洞正在释放粒子喷流，这些粒子喷流又撞向云层，然后就产生了压力波向外界发出潺潺声的情况。
A massive black hole is sending out jets of particles that crash into the cloud, causing pressure waves to ripple outward.
其主要目标就是研究宇宙中的极端现象——爆发中的恒星、宇宙喷流、湮灭粒子，以及其它那些我们根本不想发生在地球附近的现象。
Its intended purpose is to the study the extreme universe - exploding stars, cosmic jets, annihilating particles, and other stuff that we don't want happening near Earth.
当喷流中的粒子撞击到可见光或者红外波长上的光子，将导致光子能量跃迁，形成伽玛射线。
When particles in the jet strike a photon of visible or infrared light, they cause the photon to jump up in energy and become a gamma ray.
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