Astronomers have been searching for additional planets, especially since the discovery of Uranus in 1781. But why were efforts concentrated around 2 to 3 au from the Sun in the early nineteenth century?
A)Kepler's third law predicts a planet within this distance.
B)The Titus-Bode law predicts a planet within this distance.
C)The discrepancies in Uranus's orbit suggested a planet around this radius.
D)The telescope, newly invented in 1781, was not powerful enough to detect anything beyond this range.

Question

Quizplus · Accepted Answer

The Titus-Bode law predicted a planet to be located at a distance of 2 to 3 au from the Sun.

Astronomers Have Been Searching for Additional Planets, Especially Since the Discovery