Exam-style question
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In a light curve, what does a sharp dip in brightness typically represent?.
- A.A change in the star's temperature.
- B.The passage of an exoplanet in front of the star.
- C.An increase in the star's luminosity.
- D.The star's rotation period.
Model answer
What a good answer should say
- The passage of an exoplanet in front of the star.
Explanation
Why this works
The evidence indicates that a sharp dip in brightness on a light curve corresponds to a sudden reduction in light reaching the observer. This shows that an exoplanet is transiting in front of the star, blocking its light.
The implication is that such dips can be used to confirm the existence of exoplanets. Thus, the conclusion is that sharp dips in light curves are indicative of transiting exoplanets.
Common mistake
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