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.

2  Size matters

Even though planets are dim, we can learn about them by studying the decrease in sunlight or starlight reaching us when a transit happens. The most obvious thing we can learn is the size of the planet, and you’ll see how in the next section.