Jem_Facts_ on Instagram: "A tsunami doesn't start with a wave,but with an underwater earthquake. When tectonic plates on the ocean floor collide, one can slide under another, causing a sudden shift. This jolt displaces a colossal volume of water in a split second. But in the open ocean, this wave is almost invisible—it travels at the speed of a jet plane but is only about a meter high. Its full power is unleashed near the coast: the seabed rises, and the water has nowhere to go but up. This crea

Jem_Facts_ on Instagram: "When astronomers detected this flash, they were essentially observing a Cretaceous period event — the light from the stellar explosion had been traveling through space for over 100 million years. This isn't a metaphor: telescopes enable us to peer into the Universe's past thanks to the finite speed of light. Every observation of distant galaxies represents archaeology in action. Even more astonishing: according to general relativity, warping spacetime could theoreticall

Jem And The Holograms - Official Trailer (HD)