What Is Surprising About the Extrasolar Planets That Have So

question 20

Multiple Choice

What is surprising about the extrasolar planets that have so far been discovered?

• A) More than half of the extrasolar planets have strong lines of molecular oxygen in their spectra, a possible indication of life on these planets.
• B) The majority of the extrasolar planets rotate much faster than the planets in our solar system.
• C) Many of the extrasolar planets are giant planets like Jupiter, orbiting at distances characteristic of terrestrial planets like Earth, where giant planets cannot form.
• D) Many of the extrasolar planets are terrestrial planets like Earth, orbiting at distances characteristic of giant planets like Jupiter, where terrestrial planets cannot form.

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Definitions:

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