Back in October 2012, we really liked an iPad app called Junior Astronaut, which aimed to teach 9-15 year-olds about the science of space travel through text, animation and interactivity.

It was a free download with nine pages, and an in-app purchase to unlock the rest of the app. Just over a year later, though, it’s back on the App Store in a ‘Full Edition’ where you pay once to get the whole thing.

The themes and content remain the same: rockets, aerodynamics, mass, weight, gravity, actions and reactions and all the other things I kick myself for not paying more attention to as a stroppy teenage physics student.

The text comes from Wired Magazine’s space and physics journalist Adam Mann, so it’s all Proper Science. But presented in a charming, made-for-tablet way.

Junior Astronaut - Full Edition costs £3.99 for iPad from Apple’s App Store.