How fast would Santa's sleigh have to travel to deliver presents all over the world on Christmas Day? Nanogirl launches some rockets with Wairere and some friends from Orakei School to find out.

How fast would Santa's sleigh have to travel to deliver presents all over the world on Christmas Day?

Nanogirl launches some rockets with Wairere and some friends from Orakei School to find out.

Watch the video of the experiment here.

Go to this episode on rnz.co.nz for more details

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