2. 1) planets in the Milky Way Galaxy. 2) planets with life in the universe. 3) stars with planets like Earth. 4) civilizations in the Galaxy. 5) terrestrial planets with water. Question 1 The Drake equation attempts to define the number of
3. 1) planets in the Milky Way Galaxy. 2) planets with life in the universe. 3) stars with planets like Earth. 4) civilizations in the Galaxy. 5) terrestrial planets with water. Question 1 The Drake equation attempts to define the number of
4. 1) explore space. 2) communicate over interstellar distances. 3) communicate using a written language. 4) construct metal tools. 5) travel at the speed of light. Question 2 In the Drake equation, a technical civilization is defined as one that is able to
5. 1) explore space. 2) communicate over interstellar distances. 3) communicate using a written language. 4) construct metal tools. 5) travel at the speed of light. Question 2 In the Drake equation, a technical civilization is defined as one that is able to
6. 1) mud flows and bodies of liquid water existing in the past. 2) water, rather than dry ice, at the south polar cap. 3) the spectral signature of chlorophyll. 4) the face on Mars. 5) volcanoes that are still active. Question 3 The possibility of life existing once on Mars was supported by the discovery of
7. 1) mud flows and bodies of liquid water existing in the past. 2) water, rather than dry ice, at the south polar cap. 3) the spectral signature of chlorophyll. 4) the face on Mars. 5) volcanoes that are still active. Question 3 The possibility of life existing once on Mars was supported by the discovery of The exploration of the Mars rovers Spirit and Opportunity as well as the Global Surveyor mission have provided evidence that water did exist on Mars in the past.
8. 1) temperatures on a planet are reasonable. 2) terrestrial planets can form around a star. 3) terrestrial planets could have liquid water on their surfaces. 4) liquid water can condense into rain in the atmosphere. 5) Sun-like stars can exist in the Milky Way Galaxy. Question 4 The habitable zone is the area where
9. 1) temperatures on a planet are reasonable. 2) terrestrial planets can form around a star. 3) terrestrial planets could have liquid water on their surfaces. 4) liquid water can condense into rain in the atmosphere. 5) Sun-like stars can exist in the Milky Way Galaxy. Question 4 The habitable zone is the area where Stellar habitable zones
10. 1) Spica, a B-type main sequence star 2) 61 Cygni, a K-type main sequence star 3) Sirius B, a white dwarf 4) Antares, an M-type supergiant 5) Barnard’s star, an M-type red dwarf Question 5 Which star is the best candidate for seeking extraterrestrial life?
11. 1) Spica, a B-type main sequence star 2) 61 Cygni, a K-type main sequence star 3) Sirius B, a white dwarf 4) Antares, an M-type supergiant 5) Barnard’s star, an M-type red dwarf Question 5 Which star is the best candidate for seeking extraterrestrial life? In the OBAFGKM spectral ranking scale, K-type main sequence stars are cooler than the Sun, but will shine long enough with nonlethal radiation to allow life to form and evolve.
12. 1) in radio light where natural emissions from the Galaxy are minimal. 2) on Mars where liquid water has been proven to exist in the past. 3) on the Moon where water is believed to exist under ice in a deep crater. 4) in the Oort cloud where comets rich in water are formed. Question 6 The water hole is a region
13. 1) in radio light where natural emissions from the Galaxy are minimal. 2) on Mars where liquid water has been proven to exist in the past. 3) on the Moon where water is believed to exist under ice in a deep crater. 4) in the Oort cloud where comets rich in water are formed. Question 6 The water hole is a region The water hole may be the best part of the electromagnetic spectrum for intelligent civilizations to communicate across the vast reaches of space.
