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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5, Is There Intelligent Life on Earth?, Chapter 6, The Triumph of Voyager.

Multiple Choice Questions

1. What space probe was an important part of Sagan's career, and passed by a major planet in 1976?
(a) Ion.
(b) Newton.
(c) Viking.
(d) Tesla.

2. What unusual source of energy do the Voyager spacecraft take advantage of?
(a) Vacuum energy.
(b) Cosmic rays.
(c) Planetary gravity.
(d) Solar wind.

3. When were the Voyager spacecraft launched?
(a) 1972.
(b) 1982.
(c) 1969.
(d) 1977.

4. Which of the following is a major point opponents of space exploration raise?
(a) Space exploration exists for national prestige only.
(b) There is nothing of value anywhere else in the solar system.
(c) The problems on Earth should be solved first.
(d) No good has ever come of space exploration.

5. Einstein's work undermined what concept?
(a) That humans can travel to distant stars.
(b) That light is the fastest thing in the universe.
(c) That our frame of motion is stationary.
(d) That the Sun is unique.

Short Answer Questions

1. Besides the Voyager spacecraft, what does Sagan cite as a major triumph by NASA?

2. How does Sagan describe his reaction to the difficulties in detecting human life and intelligence on Earth from space?

3. Sagan suggests that throughout history, many have claimed that our species is what?

4. What is notable about the stars in Sagan's distant picture of the Earth?

5. What is the major difference between space exploration and human exploration in the past?

(see the answer key)

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