[00:00.00]Say, do you like mystery stories?[00:03.30]Well we have one for you.[00:05.64]The concept: relativity. That strange fantastic relationship between time, distance, and mass.[00:14.84]Before we're finished, I think you'll agree that truth is stranger than the strangest fiction.[00:20.11]Why do the stars shine?[00:22.37]Why does the galaxy light up?[00:24.82]E equals mC squared[00:28.12]That is the engine that lights up the stars[00:33.26]Energy turns into mass[00:37.24]E equals mC squared -[00:39.99]That is the secret of the stars[00:46.76]Now listen carefully:[00:49.62]The faster you move[00:51.53]THe heavier you get[00:53.48]The energy of motion turns into m, your mass[00:56.83]Energy of motion[00:57.92]Energy equals Mass times the speed of light squared[01:01.83]An awful lot of energy[01:03.78]For a tiny amount of mass[01:06.10]Light travels at the same speed[01:08.10]No matter how you look at it[01:10.30]No matter how I move, relative to you,[01:12.20]Light travels at the same speed[01:14.27]No matter who is doing the measurement[01:16.30]And no matter what direction you are moving[01:18.12]The speed of light is the same[01:20.30]No matter what direction, or how fast[01:22.45]As you travel faster[01:24.53]Time slows down[01:26.71]Everything slows down[01:28.81]Time slows down when you move[01:30.48]Time passes at a different rate[01:32.73]Clocks run slow[01:34.60]It's a monumental shift in how we see the world[01:38.81]The beauty, the majesty,[01:40.79]The power of the universe[01:42.98]Into a single equation[01:47.17]E equals mC squared -[01:51.50]That is the engine that lights up the stars[01:55.53]Energy turns into mass[01:59.44]E equals mC squared -[02:02.24]That is the secret of the stars[02:04.21]It's a beautiful piece of science[02:06.51]It's a beautifuly elegant theory[02:08.53]It's a beautiful piece of science[02:11.43]A planet like the Earth is kept in orbit[02:13.29]Because it follows curves[02:15.46]In the spatial fabric caused[02:17.56]By the sun's presence[02:19.70]Space and time are bent by stars and planets[02:23.74]As things move through this curved space, they bend[02:29.52]Now all of this is illustration of the fact[02:31.74]that time and space are linked together.[02:36.26]As you're moving through bent and curved space and time,[02:40.46]You feel like you feel a force[02:42.25]You feel like you feel a force[02:43.99]As you're moving through bent and curved space and time,[02:48.60]You feel like you feel a force[02:50.59]That force is gravity[02:52.41]The beauty, the majesty,[02:54.62]The power of the universe[02:56.64]Into a single equation[03:00.91]E equals mC squared -[03:04.80]That is the engine that lights up the stars[03:09.13]Energy turns into mass[03:13.28]E equals mC squared -[03:15.68]That is the secret of the stars[03:19.69]That is the secret of the stars[03:23.75]That is the secret of the stars[03:27.75]That is the secret of the stars[03:32.30]That is the secret of the stars...