Skip to content
Skip to main content

About this free course

Author

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.

Composite of photographs of the phases of Venus.
Figure 6  Phases of Venus. This composite of photographs taken through a telescope shows Venus narrowing to a thin crescent over the course of a couple of months.

 1.1  Phases