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太空想殺了我們嗎？ - 朗雪尼菲爾特 (Ron Shaneyfelt)
385,731 views
|
Ron Shaneyfelt |
TED-Ed
• May 2013
Read transcript
完整課程請見: http://ed.ted.com/lessons/is-space-trying-to-kill-us-ron-shaneyfelt 巨大小行星對地球及居民造成重大偒害的機率有多大？還有太陽──是不是快要燒完了？銀河系中心的超大質量黑洞──我們該擔心嗎？朗雪尼菲爾特 (Ron Shaneyfelt) 評估了太空的各種危機。 課程: Ron Shaneyfelt 動畫: Retchy
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humanity
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