It is an explosion of an old compact star that is as heavy as the Sun but as small as the Earth. A single such supernova can emit as much light as a whole galaxy.
Ia型超新星是由像太阳一样重却像地球一样小的致密星爆炸而成，这样一颗超新星所发射出的光和整个银河系一样多。
The kinetic energy falling onto the compact star simply heats the surface and is re-radiated as black-body radiation.
落到致密星上的动能只是简单地加热了星的表面，并以黑体辅射的形式再发射出去。
The kinetic energy falling onto the compact star simply heats the surface and is re-radiated as black-body radiation.
落到致密星上的动能只是简单地加热了星的表面，并以黑体辅射的形式再发射出去。
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