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31) What kind of radiation we mostly search for in SETI data?

48) White dwarfs

43) Approximately how soon might we expect an immediate response from a civilization that received the signal we sent to the globular cluster M13 (25,000 light-years away) in 1974?

28) On a Hertzsprung-Russell diagram, where would we find stars that are colder and dim?

11) Which of the following methods has led to the most discoveries of massive planets orbiting near their parent stars?

50) Discoveries of extrasolar planets have shown us that

29) According to the theory of special relativity, which of the following properties can be measured to have different values by different observers?

39) Which of the following factors influence the surface habitability of a planet?

1) What other places in the solar system have habitats that might support life?

10) Approximately how many exoplanets have been discovered to date?