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space hard MCQ

Which space telescope discovered the TRAPPIST-1 system with seven Earth-sized planets?

Kepler
TESS
Spitzer
James Webb

Answer: Spitzer

While initial discoveries came from ground-based TRAPPIST telescopes, NASA's Spitzer Space Telescope confirmed and characterized the seven-planet system in 2017.

Topic Space Missions - International

Exam Relevance UPSC Prelims, General Science

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