As part of the special episode, Blue Peter presenter Radzi visited CERN to learn about the Large Hadron Collider (LHC), in which Cockcroft is playing a key role in the high luminosity upgrade.

The show explains what particles are and why the LHC is so large. Sam demonstrated the electric bikes used by CERN staff to get about and discussed the role engineers play in the LHC, alongside the physicists.

Blue Peter is the BBC’s flagship children’s TV programme and is the longest running children's TV show in the world.

And yes, she did receive her Blue Peter badge.

https://www.bbc.co.uk/iplayer/episode/b09szjl3/blue-peter-epic-science-and-chrismd