Multiple Choice
What may have contributed to the major impacts on the Moon and other objects 3.9 billion years ago?
A) Encounters of Uranus and Neptune with Trans-Neptunian objects as Uranus and Neptune moved farther outward in their orbits.
B) Encounters of Uranus and Neptune with Trans-Neptunian objects as Uranus and Neptune moved farther inward in their orbits.
C) Encounters of Jupiter and Saturn with Trans-Neptunian objects as Jupiter and Saturn moved farther outward in their orbits.
D) Encounters of Jupiter and Saturn with Trans-Neptunian objects as Jupiter and Saturn moved farther inward in their orbits.
Correct Answer:

Verified
Correct Answer:
Verified
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