Fog Blog Time Travel Log: Time Dilation:

THIS IS MIND BOGGLING! HOW DOES GRAVITY CHANGE TIME! WE ARE LEARNING MORE ABOUT THE POSSIBILITY OF TIME TRAVEL! WE HAVE KNOWN FOR A WHILE THAT TIME MOVES FASTER FARTHER FROM THE EARTH THAN AT SEA LEVEL WHERE THE FORCE OF GRAVITY IS GREATEST....AND ....GRAVITY IS NOT JUST A FORCE! Did you watch the movie Interstellar and come out wondering how any of it was possible? It is mind-boggling to comprehend that one hour can pass by on one planet while seven years pass by on Earth.The explanation comes down to what scientists call Gravitational Time Dilation. This effect measures the amount of time that has elapsed between two events by observers at different distances from a gravitational mass. In other words, time runs slower wherever gravity is strongest, and this is because gravity curves space-time.Think of it this way — time follows a simple equation:speed = distance / timeLight (in this case, speed) is always constant and travels at a speed of 180,000 miles per second. Imagine two beams of light: one in a weak gravitational field traveling between points a and b, and the other in a strong gravitational field traveling between points c and d.