When is a planet not a planet?
The Problem with Pluto joins Lucy Leavitt on board a research craft heading to the outer limits of the Solar System.
Their mission? To collect data to silence debate questioning Pluto's status.
On the way, Lucy learns how Pluto is different to the other planets, where Pluto belongs in the overall structure of the Solar System and the difficulties of defining what makes a planet.
Please note: sessions during school hours may include school groups.