It is mind-boggling to comprehend that one hour can pass by on one planet while seven years pass by on Earth. My thought is: "Time dilation is actually good for interstellar travel" Say we have a space ship that travel at 50% of light speed. - ericbsantana/interstellar-time-dilation The explanation comes down to what scientists call Gravitational Time Dilation. A time dilation calculator of Miller's planet from Interstellar. This space ship will take 8.6 years (earth time) to reach Alpha Centauri. Once Cooper has entered the tesseract, he can see the whole of Murph's timeline in sections as he moves around. The 61,000 time dilation factor on Milner's planet is not due to relative velocity time dilation, but gravitational time dilation. Additionally, it is not due to the gravity on the planet itself, but the massive gravitational well of Gargantua (the supermassive spinning black hole). He is moving through a higher dimension rather than following time dilation in our own spacetime. Did you watch the movie Interstellar and come out wondering how any of it was possible? TARS tells him that the tesseract is a manifestation of five dimensions. Time dilation is a difference in the elapsed time measured by two clocks, either due to them having a velocity relative to each other, or by there being a gravitational potential difference between their …

So, if you're standing … If you're curious, the equation for time dilation is actually surprisingly simple: Δt' = Δt / √( 1 - v 2 / c 2) Where t' is an observer's time "speed," t is a traveler's time "speed," and v is velocity in terms of c. The closer v gets to c the slower time moves. To travel to nearest star Alpha Centauri which is about 4.3 light years away. It's not time dilation. The time dilation factor is exactly 1 hour on Milller per 7 years of Earth time due to the gravitational forces of Gargantua moving the planet through empty space at roughly 99.99999998% the speed of light.