거대한 충돌이 발생하는 초신성 폭발을 관측하다. 2016.11.30. 18:40 (Artist's conception of a shock-interacting supernova. Successive eruptions of a massive star produce ejecta with different velocities: the blue ring corresponds to slowly moving layers which are punched by fast ejecta (red-to-yellow) which shoots out. Interaction of those gas masses is via ra..