The possibility of extraterrestrial life was first considered
A) after the invention of the telescope
B) only during the past few decades
C) thousands of years ago during ancient times
D) at the turn of the 20th century
Correct Answer:
Verified
Q8: Which of the following is not a
Q9: Apparent retrograde motion occurs when a planet
Q10: The first detailed astronomical observations were made
Q11: Most ancient cultures believed that the Earth
Q12: The astronomical object in our sky which
Q14: The astronomical object in our sky which
Q15: In the Ptolemaic model, retrograde motion is
Q16: Historical evidence suggests that the methods of
Q17: Most of the time, planets are observed
Q18: The first ancient civilization able to predict
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