The Planet Neptune

This short 8-question quiz focuses on Neptune, the most distant planet in the solar system.

You will work through fill-in-the-blank and true or false items, with prompts like Who discovered Neptune? and What is the rotation period of Neptune?, so it is a quick check.

A standout fact is that Neptune was the first planet found through mathematical prediction rather than by chance, with astronomers calculating where it had to be before pointing a telescope at it.

You will also see how long its year really is.

Recommended level: intermediate.