Skip to content
Skip to main content

About this free course


Download this course

Share this free course

An introduction to exoplanets
An introduction to exoplanets

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.


This free course was written by Carole Haswell, Flora Rees and Joanna Barstow with contributions from Amanda Smith. It was first published in May 2019.

Except for third party materials and otherwise stated (see terms and conditions [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] ), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence.

The material acknowledged below is Proprietary and used under licence (not subject to Creative Commons Licence). Grateful acknowledgement is made to the following sources for permission to reproduce material in this free course:

Course image: Dana Berry / Skyworks Digital / CfA

Week 4

Figure 2a: original © NASA, redrawn version © The Open University

Figure 2b: European Space Agency, ESA

Figure 3: taken from: midstate_impact/ photo/ solar-transit-venus-newhjpg-d5e8dddabfcc1221.jpg

Figure 4: Wolfgang Ellsasser; licenses/ by/ 3.0

Figure 5: MacNeil Fernanndes; licenses/ by-sa/ 3.0

Figure 7: LucasVB;

Figure 8: GeoGebra;

Figure 9: taken from: wikipedia/ commons/ thumb/ 8/ 8c/ Cone.svg/ 2000px-Cone.svg.png

Figure 10: © unknown

Figure 11:

Figure 12: taken from 2012/ 06/ transit_science.gif

Figure 13: Limaner

Figure 14: NASA

Every effort has been made to contact copyright owners. If any have been inadvertently overlooked, the publishers will be pleased to make the necessary arrangements at the first opportunity.

Don’t miss out

If reading this text has inspired you to learn more, you may be interested in joining the millions of people who discover our free learning resources and qualifications by visiting The Open University – openlearn/ free-courses.