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A geologist asks when most objects of the solar system formed alongside the Sun. The answer is about:
A3.5 billion years
B4.5 billion years
C1.5 billion years
D2.5 billion years
Answer & Solution
Correct answer: B. 4.5 billion years
1. Spacecraft and observation agree on it.
2. The Sun and its objects share the date.
3. It is about 4.5 billion years ago.
_Source: OpenStax Astronomy 2e, Chapter 7, Other Worlds: an Introduction to the Solar System._
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