2. Consider the following statements, regarding the newly discovered exoplanet system,

1] Unlike in the case of our solar system, the planets have apparently formed far away from its star and gradually migrated towards it.

2] Since the initial discovery of three planets was made using the Chile-based Transiting Planets and Planetesimals Small Telescope, the exoplanet system is called TRAPPIST-1.

Which of the above statements is/are correct?

a) 1 Only

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b) 2 Only

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c) Both 1 and 2

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d) Neither 1 nor 2

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Solution

The correct option is C c) Both 1 and 2

Ans c) Both the statements are correct.

Explanation: Unlike in the case of our solar system, the planets have apparently formed far away from the star and gradually migrated towards it. They share a similar formation history with the Galilean moons, which migrated towards Jupiter after formation.Another major difference in comparison with the solar system is the tight packing of the seven planets around the star.Since the initial discovery of three planets was made using the Chile-based Transiting Planets and Planetesimals Small Telescope, the exoplanet system is called TRAPPIST-1.

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