Classroom Resource – Exoplanets in Motion – Building your own exoplanetary system
Brief description:
In this set of activities, students will learn how scientists study exoplanets with satellites like Cheops (CHaracterising ExOPlanet Satellite), using the transit method. Students will build their own model exoplanetary system, then observe and interpret model light curves.
Assembly instructions for three different transit models are provided: turntable (simple), rover (intermediate) and 3D printed (advanced).
This activity is part of a series that includes “Exoplanets in Transit” where students analyse real data from ESA’s Cheops satellite and “Exoplanet in a box” where students build a transit model inside a shoebox and calculate the size of an exoplanet.
Subject: Science, Physics, Mathematics, Astronomy
Learning Objectives:
Understanding what exoplanets are and how satellites investigate them.
Understanding how the transit method is used for the detection and characterisation of exoplanets.
Enhancing experimental skills by observing and interpreting measured light curves.
Developing team working skills through collaborative problem solving.
Communicating scientific and mathematical findings to peers.
In this activity, students will be introduced to exoplanets, the transit method and Cheops through a series of questions and discussion exercises.
Equipment
Student Worksheet per pupil
Pen/pencil
Activity 2: Transiting Exoplanet Model
In this activity, students will build and test their own model of an exoplanetary system orbiting a star, represented by a light bulb.
Assembly instructions for three different exoplanet transit models are available in separate documents: turntable (simple), rover (intermediate) and 3D printed (advanced). Choose the exoplanet transit model that best fits your students.
Equipment
Light bulb fitting and support
High luminosity light bulb
Plasticine/modelling clay
Ruler
Wooden skewers
Light meter (e.g. phone with light meter app, or data logger)
3D Printed Edition: motor, 3D printed parts of the model
Rover Edition: Rover (e.g. WeDo 2.0)
Did you know?
The nearest exoplanet to us is a planet orbiting the star Proxima Centauri.
Light takes only 4.2 light years to travel from Proxima Centauri to Earth, but it would take over six million years for the fastest spacecraft that currently exists to reach this exoplanet.
Approximate distance between Earth and Proxima Centauri
Brief description: In this set of activities students will learn how scientists study exoplanets with telescopes, using the transit method. Students will characterise exoplanets using