GRE Reading Comprehension
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Source: OG2
Astronomers found a large body orbiting close to the star Upsilon Andromedae. The standard theory of planet formation holds that no planet that large could be formed so close to a star, leading to the suggestion that the body is a companion star. A subsequent discovery puts that suggestion in doubt: two other large bodies were found orbiting close to Upsilon Andromedae, and the standard theory of companion stars allows for at most one companion star.
Question List: 1
Which of the following, if true, most helps to resolve the status of the orbiting body without casting doubt on the two standard theories mentioned?
- A The smaller a planet orbiting a star is, and the farther away it is from the star, the less likely it is to be discovered.
- B If a planet's orbit is disturbed, the planet can be drawn by gravity toward the star it is orbiting.
- C The largest of the bodies orbiting Upsilon Andromedae is the farthest away from the star, and the smallest is the nearest.
- D It is likely that there are many stars, in addition to Upsilon Andromedae and the Sun, that are orbited by more than one smaller body.
- E In most cases of companion stars, the smaller companion is much fainter than the larger star.