superdense

If the incoming projectile were a white dwarf—a superdense star that packs the mass of the sun into a body a hundredth the size—the residents of Earth would be treated to quite a fireworks show.

如果接近的天体是颗白矮星（whitedwarfstar，密恒星，质量约等同于太阳，但其体积却不到太阳的百万之），麽地球上的居民将可以看到场壮丽的烟火秀。