ELI5 Tesseract - what is it and what does it look like?

ELI5 Explain Like I'm 5: Bite sized answers to stuff you should know about - in a mini podcast

What is the tesseract? The geometric shape, not the fictional Marvel space stone! How can we visualize a 4D shape in a 3D world? What did the great Carl Sagan say about why it’s so hard for us to imagine 4 dimensions? Who discovered the tesseract in the first place?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: lifewitheloise, portarossa, geetarmikey, green_meklar, sabertoothedpudding and okami31

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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