Which of the following discoveries would cause us to re- evaluate the nebular theory for forming planets?
A) A star's 5 terrestrial planets orbit in the opposite direction of its 3 jovian planets.
B) Of the star's five terrestrial planets, one has a large moon.
C) Two of the star's planets are rotating in directions backwards compared to their orbital direction.
D) A star has zero planets.
E) A star has 20 planets.
Correct Answer:
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