Finding Exoplanets

Describe how astronomers detect planets around other stars using transit photometry (dip in starlight as a planet crosses) and radial velocity (Doppler wobble of the star), explain the habitable zone concept, and discuss what atmospheric biosignatures — such as oxygen, methane, and water vapour detected together — would suggest about a planet

Usually learned at ages 11–13

Builds on: The solar system (age 11+) (helps), The Vast Scale of Space

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On the map from: Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy