Unit 4 Extraterrestrials

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Unit 4 Extraterrestrials

• UFO
• Extraterrestrials
• Isaac Asimov
• Venus
• Congress
• The Supreme Court

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UFO (Unidentified Flying Objects)
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Extraterrestrials
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UFO and Extraterrestrials

• Life-forms that may have evolved on other
  planets. There is no hard evidence at present
  that life exists other than on the Earth. Most
  UFOs have been satisfactorily explained as being
  natural or man-made, and the Viking missions to
  Mars were inconclusive in testing for the
  existence of life on that planet. Nevertheless,
  searches have been and are being made for signs
  that life has arisen in other parts of the
  universe.

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Isaac Asimov (1920-1992)
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Isaac Asimov (1920-1992)

• Asimov was a Russian-born American writer of
  science fiction. Among his vest-known science
  fiction are, I, Robert (1950) and the Foundation
  Trilogy (1951-1953).

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Isaac Asimov (1920-1992)

• Asimov developed Three Laws because he was
  tired of the science fiction stories of the 1920s
  and 1930s in which the robots, like
  Frankensteins creation, turned on their creators
  and became dangerous monsters. The brains of
  Asimovs robots were designed around the Three
  Laws
• a) A robot may not injure a human being, or,
  through inaction, allow a human being to come to
  harm.
• b) A robot must obey the orders given it by
  human beings except where such orders would
  conflict with the First Law.
• c) A robot must protect its own existence as
  long as such protection does not conflict with
  the First or Second Law.

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Venus
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Venus

• Venus is also known as morning star or
  evening star. In Chinese, its called ????. It
  can be the brightest object in the sky after the
  sun and moon and follows a near-circular path.
  Astronomers refer to Venus as the Earths sister
  planet. Both are similar in size, mass, density
  and volume. However, Venus is very different from
  the Earth. It has no oceans and is surrounded by
  a heavy atmosphere composed mainly of carbon
  dioxide with virtually no water vapor. At the
  surface, the temperature is higher than 400C,
  which has made it a hostile environment to living
  things.

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Congress

• Congress is the law-making body in the US.
  Congress has two houses, the Senate (???) and the
  House of Representatives (???). The main job of
  Congress is making laws. Before a new law can
  become effective, both houses have to pass it,
  and it must then have the approval of the
  President. In a system of government based on a
  series of checks and balances, the two houses of
  Congress act as a check on each other, as well as
  together forming a check on the powers of the
  executive branch, especially the President.

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The U.S. Supreme Court
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The U.S. Supreme Court

• The Supreme Court in Washington, D.C. is the
  highest court in the US, and is very powerful. It
  has 9 judges, called justices. Traditionally,
  they are called the 9 old men, although there has
  been one woman justice. The head of the court has
  the title of Chief Justice of the United States.
  Justices are appointed by the President, although
  the Senate must give its approval to the choice.
  There has been only one African-American justice.