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World 2 · The Transit Dip · 11 min · PRO

Period, orbit and Kepler

How far out is it?

PRO · Exoplanet Hunter

World 2: The Transit Dip 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.

  • The shadow of a planet
  • Reading a planet’s size
  • Tilt and luck
  • Is it really a planet?
  • Planets tug back
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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← Reading a planet’s sizeTilt and luck →

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