Date post: | 12-May-2015 |
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Technology |
Upload: | roger-chou |
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981 Sciences via MoviesWeek 11:
Aliens- • Do they exist? • Can we meet them? • Are they good or evil?
To create an extraterrestrial civilization, you need an inhabitable planet.
Criterion 1: Close but not to close to a sun-like star; so that the temperature is between 0-800C.
r
There are as many as 100 billions of stars in our galaxy.
Criterion 2: The right mass for trapping an atmosphere
6400Km
100Km
Criterion 3: Water! Water! Water!
A strike on Moon by NASA last Friday have shown the existence of water.
Dry water channels on Mars
Why water matters?
energy
CO2
Fuel cell
electricity
Food!
What about life?
地球生命的緣起之探索:Miller實驗 1
953模仿磐古大
氣
模仿磐古海
洋
生命的分子:氨基酸 Amino Acid
Miller 實驗: 1953 產生 5種, 2007 產生 22 種。
大自然中有 22種,生物體中有 20種。
氨基酸序列-
蛋白
質
Can we meet each other?- The odd of getting a message from ET
http://www.youtube.com/watch?v=kNAUR7NQCLA the introducing scene of Contact (1997)
100 光年
SETI:Search for ExtraTerrestrial Intelligence無線電波的增加地球在宇宙間的可視度
不斷擴張
終於可以讓人知道我的存在
假設 Kennedy 沒處理好「古巴危機」
42 光年
1905 1945 1962
稍縱即失
當無線電薄殼通過時對方正好有無線電科技才能知道我的存在
Are aliens good or evil? Benign or malignant?
http://www.youtube.com/watch?v=mYCBgSRNjk0 alien landing, close encounters of the 3rd kind (1977)
Good
Are aliens good or evil? Benign or malignant?
http://www.youtube.com/watch?v=-c0Myr_sYsE
A trailer of War of the Worlds (2005)Evil
Are aliens good or evil? Benign or malignant?
http://www.youtube.com/watch?v=ojhGdRSkiUw
A trailer of Alien (1979) Neither
2001 (1968)http://www.youtube.com/watch?v=c1IPrx-zC1Y
Passage through a wormhole
Contact (1997)http://www.youtube.com/watch?v=-ZhvBkrq6rU
&feature=related
議題討論:1.假設有一批外星人訪問地球,你認為他們會是良善的或是邪惡的?哪一種可能性較高?為什麼?
2.在不確定外星人意向的情況下,你認為地球人應該如何應對較為安全?(請完成次頁之九宮格後再回答;該九宮格為賽局理論工具,可以助你做決策。)
Game Theory in A Beautiful Mind (2001):http://www.youtube.com/watch?v=l0ywiYboCLk
外星人是善良的
外星人是邪惡的
外星人不善不惡,但會自我防衛
絕不主動攻擊,但受到攻擊會積極反擊遭受攻擊盡可能不反擊,保持極大克制當發覺他們有不良意圖時,先發制人