Multiple Choice
Humanity has been thinking about the possibility of extraterrestrial life
A) since the first reports of unidentified flying objects in the 1940's
B) since reports of canals on Mars were first made in the 1870's
C) throughout human history since the time of the ancient Greeks
Correct Answer:
Verified
Correct Answer:
Verified
Q18: Among the other planets, probably the most
Q19: The Search for Extraterrestrial Intelligence (SETI) program
Q20: Extraterrestrial life elsewhere in the universe<br>A) will
Q21: The portrayal of nearly all aliens in
Q22: Extraterrestrial life is defined to be<br>A) life
Q24: Beneath the surface of which moon of
Q25: Astronomy has shown us that the Earth<br>A)
Q26: Astrobiology as a field of scientific research,
Q27: The discovery of any kind of life
Q28: A habitable world is defined to be