A century ago yesterday, Albert Einstein published his greatest work, the theory of relativity. His mind-bending idea forever changed how we think about the cosmos. It has stood up to intense scrutiny all this time.

If you’ve wanted to know what the theory of relativity is about but were thrown off by the oft complex science-y jargon, you might like this succinct 3-minute explanation. The cutesy animation features the talents of David Tennant, a sock, and two rather seedy characters, messieurs Dark Energy and Dark Matter to explain the relationship between space and time and mass.

The short film was created by Eoin Duffy.

[via SA Techie]