05:25 The physics of the universe Why don’t we cover the desert with solar panels? Lesson duration 05:25 5,090,206 Views
04:59 The physics of the universe Why are airplanes slower than they used to be? Lesson duration 04:59 2,473,131 Views
05:38 Beyond our solar system Hawking's black hole paradox explained Lesson duration 05:38 3,752,472 Views
04:47 Beyond our solar system Three ways the universe could end Lesson duration 04:47 2,090,100 Views
05:28 The physics of the universe Turbulence: one of the great unsolved mysteries of physics Lesson duration 05:28 1,370,695 Views
04:56 Our solar system How far would you have to go to escape gravity? Lesson duration 04:56 566,418 Views
05:21 The physics of the universe What’s the smallest thing in the universe? Lesson duration 05:21 1,269,552 Views
06:07 Beyond our solar system What is the universe expanding into? Lesson duration 06:07 1,791,410 Views
05:31 The physics of the universe Why don't perpetual motion machines ever work? Lesson duration 05:31 16,583,740 Views
