Which of these effects is now thought to be the MOST likely cause for the inclinations of spin axis of several of the planets such as Uranus (and even Earth) to their orbital planes?
A) out-of-balance force on the spin axes of planets from their moons, some of which are very massive
B) major collision with another planetlike body
C) steady force on one hemisphere of the planet from the highly directional solar wind
D) tidal distortion and deflection caused by neighboring planets

Question

Quizplus · Accepted Answer

Major collisions with other planet-like bodies are now thought to be the most likely cause for the significant tilts in the spin axes of several planets, including Uranus and Earth. This theory suggests that early in the solar system's history, these planets experienced colossal impacts with other large celestial bodies, altering their axial tilts.

Which of These Effects Is Now Thought to Be the MOST