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太空会消灭我们人类吗？ - Ron Shaneyfelt
385,731 views
|
Ron Shaneyfelt |
TED-Ed
• May 2013
Read transcript
观看完整的视频: http://ed.ted.com/lessons/is-space-trying-to-kill-us-ron-shaneyfelt 来自太空的小行星破坏地球和其居民的概率究竟有多大呢？那太阳呢 — 它是否即将衰灭呢？此外，我们又是否要担心存在于银河系中的巨大的黑洞呢？Ron Shaneyfelt 将会告诉我们太空的危险性。 授课：Ron Shaneyfelt 动画制作：Retchy
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