https://blog.wongcw.com/2019/08/19/nasa%e7%a7%91%e5%ad%b8%e5%ae%b6%e9%80%9a%e9%81%8e%e5%93%88%e5%8b%83%e7%99%bc%e7%8f%be%e5%b9%b4%e9%82%81%e6%81%86%e6%98%9f%e5%91%a8%e5%9c%8d%e5%ad%98%e5%9c%a8%e4%b8%80%e5%9c%98/
NASA科學家通過哈勃發現“年邁”恆星周圍存在一團奇怪的氣體