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World 6 · Visit TRAPPIST-1 · 11 min · PRO

A system inside Mercury’s orbit

Periods, Kepler and resonance

PRO · Exoplanet Hunter

World 6: Visit TRAPPIST-1 is part of PRO

The first world of Exoplanet Hunter is free. PRO opens the other 26 lessons in 6 worlds — simulations, quizzes and all.

  • A tiny star with seven worlds
  • Which worlds are in the zone?
  • Seven dips in one light curve
  • Life under a red sun
  • Step 1: choose your star
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

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← A tiny star with seven worldsWhich worlds are in the zone? →

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