NOVA’s: A Trip Through Spacetime

  • By Susan K. Lewis and Benjamin Wilson
  • Posted 09.29.11
  • NOVA

Our common sense tells us that space and time are fundamentally separate things. We experience space as a 3-D arena in which our bodies move, and we mark time with ticking clocks and the aging of our bodies. But Albert Einstein’s groundbreaking theory of special relativity shows that space and time are actually linked in a 4-D realm called spacetime. Here, explore the logic behind Einstein’s astounding insight, and play with a simulation that shows how traveling near the speed of light changes your experience of the flow of time and the fabric of space.

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