NPRE 402 Homework 1

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University of Illinois, Urbana Champaign *

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402

Subject

Geography

Date

Feb 20, 2024

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pdf

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1

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Write a paragraph about the “Fermi Paradox”. The Fermi Paradox is a main discrepancy between the lack of evidence of advanced extraterrestrial life and the high probability/likelihood of their existence. The main reason why we believe that there should be a high probability of extraterrestrial life is due to the following statements: 1. Billions of stars in the Milky Way, yet alone in the galaxy with a very high probability of planets inside the Goldilocks zone, being perfect for life 2. Our solar system is very young, so there has to be more ancient/intelligent life that would have evolved millions or even billions of years ago 3. We are currently going through the main phase of space exploration, and if there were intelligent species that evolved millions of years ago, they would have developed interstellar travel Access the internet to determine the latest available figure of total global power consumption. In 2021, the total global power consumption was around 20 TWs. Use the Carl Sagan’s formula to calculate our technological civilization’s level on the Kardashev’s cosmic scale. P = 20 * 10 12 K = (log 10 P - 6)/10 = (log 10 20*10 12 - 6)/10 = 0.73. We are still under Type I civilization. On the Kardashev Scale, identify the power needs in Watts for Type I, II and III civilizations. Type I civilizations would need to be at 10 16 W power usage level in their planet Type II civilizations would need to be at 10 26 W within their solar system Type III civilizations would need to be at 10 36 W within their galaxy. In how many years is our Earth expected to achieve a Type I status? In a perfect environment, the current estimation is that we would reach a Type I civilization in 100-200 years.
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