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科學在身邊．宇宙專題 podcast artwork

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科學在身邊．宇宙專題

by Dr. Haoran Zhang

科學在身邊。科學就在你身邊。

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Episodes

  1. 粵語｜張浩然博士：外星人為什麼不來？

    人類在地球上出現了大約200萬年，地球的生命也有大概35億年歷史，但是在宇宙137億年的悠長歲月中，這些都顯得微不足道。在太陽系誕生之前，宇宙中肯定已經出現過大量跟太陽系相似的恆星系。另一方面，太陽系的引力半徑只有兩光年，但是可觀察宇宙的半徑至少有465億光年，裡面有2萬億個像銀河系那樣的星系，恆星總數量估計比地球上面所有沙粒的數量還要多。這些數字在在指出：在那麼長的時間尺度裡，在那麼廣闊的空間裡，如果說地球是整個宇宙中唯一能夠孕育出生命的星球，無論怎樣講，都是難以置信的。...

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ABOUT THIS SHOW

科學在身邊。科學就在你身邊。

HOSTED BY

Dr. Haoran Zhang

CATEGORIES

science natural

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科學在身邊．宇宙專題 currently has 1 episodes available on PodParley. New episodes are automatically indexed when they're published to the podcast feed.

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科學在身邊。科學就在你身邊。

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科學在身邊．宇宙專題 has 1 episodes. Check the episode list to see recent publication dates and frequency.

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科學在身邊．宇宙專題 is created and hosted by Dr. Haoran Zhang.
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