Wormhole
Videos
A wormhole is a hypothetical structure that connects disparate points in spacetime. It can be visualized as a tunnel with two ends at separate points in spacetime. Wormholes are based on a special sol
Image of a simulated traversable wormhole that connects the square in front of the physical institutes of University of Tübingen with the sand dunes near Boulogne-sur-Mer in the north of France. The image is calculated with 4D raytracing in a Morris–Thorne wormhole metric, but the gravitational effects on the wavelength of light have not been simulated.
Wormhole travel as envisioned by Les Bossinas for NASA, c. 1998
Black hole Messier 87 crop max res
Time travel
Videos
Time travel is the hypothetical activity of traveling into the past or future. Time travel is a concept in philosophy, space, time and fiction, particularly science fiction. In fiction, time travel is
Statue of Rip Van Winkle in Irvington, New York
Mr. and Mrs. Fezziwig dance in a vision shown to Scrooge by the Ghost of Christmas Past.