The concept of higher spatial dimension extends our familiar three-dimensional space—length, width, and height—by introducing additional directions which are perpendicular to all three.

Einstein's special relativity, established in 1905, unified space and time into a four-dimensional continuum. It relies on two core principles: Galileo's relativity and the constancy of light's speed.

From 3-D to 4-D It's difficult for us to accept ... To extend the curled-up space to include these added dimensions, imagine that spheres replace the Kaluza-Klein circles. Instead of one added ...

He would eventually become the series’ producer towards the end of the Fourth Doctor’s era. Prolific actor Jack May plays Space Corps General Hermack. He had recently had the regular role of ...

One of the weirdest theories in cosmology is the holographic principle, the idea that our universe is a three-dimensional image projected off a two-dimensional surface — the idea that, yes, we are ...

We get a rare insight into the Doctor’s and Susan’s travels before they came to London in 1963 when Susan identifies a picture on the TARDIS scanner as being the planet Quinnis in the fourth ...