At least 70% of stars have planets. How many planets can astronomers reasonably claim exist in the Milky Way galaxy?
A)at least 1 trillion
B)at least 70 billion
C)at least 3000
D)at least 8

Question

Quizplus · Accepted Answer

The Milky Way galaxy is estimated to have around 100 billion stars. Given that at least 70% of stars have planets, it can be reasonably claimed that there are at least 70 billion planets in the Milky Way galaxy. The other answer choices are too high (A) or too low (C, D) based on current estimates.

At Least 70% of Stars Have Planets