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白矮星
白矮星要花多久變成黑矮星也就是白矮星不再發出任何光？<div></div> 可能連一百三十七億年都沒辦法讓白矮星變成黑矮星。 It may need more than the life span of our universe. White dwarf is slowly releasing it energy to become a brown or black dwarf. However, the process is like when our car is out of gas during moving along. Its like using it own momentum to release the energy slowly until there is none. So the process is slow and boring! 有一個推算的表格吧，但現在的科技都只是推測，所以看看就好了 黑矮星還沒有被發現的證據, 只是理論上的想假物.理論上它冷卻的時間會比宇宙年齡還大上許多.
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