Multiple Choice
Which one of the following techniques can be used to determine the mass of a planet most easily?
A) Measure the size by direct observation.
B) Observe the "wobble" its gravitational pull causes in the motion of the Sun.
C) Measure the period and size of the orbit of a satellite moving around it.
D) Observe the spectrum of radiation reflected from its surface.
Correct Answer:
Verified
Correct Answer:
Verified
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