Ella and Slippy are perfecting their triple corkscrews when Priya surprises Ella with a visit.
While playing ice hockey on Europa, an ice-covered moon of Jupiter, a stray puck injures Maggie.
Ella insists on going to watch a binary star supernova. Slippy opts out and heads off on his own.
Mum and Ella are going to see a red dwarf star. Ella is forced to share Momella Day with Tilly.
Ella, Slippy and Madhu convince Priya that she needs to try new things to experience Mars.
Madhu is excited to celebrate the anniversary of the day they all met. Madhu finds the rock where they met and realises it's hurtling towards Uranus. They must stop it before it gets destroyed.
Jonathan Finkelstein
Producer
