A 1D analog to a plug with more volume than the hole it fills is a curve with more length that the (external) distance between its endpoints (Image: B. Dodson)
The proper radius and volume of a properly configured Tardis region starts large, and rapidly grows larger. (Image: ArXiv.org)
Is dark energy needed to accelerate the expansion of the universe? (Image: Shutterstock)
Fans of Doctor Who will be very familiar with the stupefied phrase uttered by all new visitors to his Tardis: "It's...bigger...on the inside." As it turns out, this apparently irrational idea may have something to contribute to our understanding of the universe. A team of cosmologists in Finland and Poland propose that the observed acceleration of the expansion of the universe, usually explained by dark energy or modified laws of gravity, may actually be the result of regions of spacetime that are larger on the inside than they appear from the outside. The researchers have dubbed these "Tardis regions."
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