05:25 The physics of the universe Why don’t we cover the desert with solar panels? Lesson duration 05:25 5,339,089 Views
04:59 The physics of the universe Why are airplanes slower than they used to be? Lesson duration 04:59 2,478,634 Views
05:38 Beyond our solar system Hawking's black hole paradox explained Lesson duration 05:38 3,773,375 Views
04:47 Beyond our solar system Three ways the universe could end Lesson duration 04:47 2,121,749 Views
05:28 The physics of the universe Turbulence: one of the great unsolved mysteries of physics Lesson duration 05:28 1,375,958 Views
04:56 Our solar system How far would you have to go to escape gravity? Lesson duration 04:56 573,947 Views
05:21 The physics of the universe What’s the smallest thing in the universe? Lesson duration 05:21 1,296,863 Views
06:07 Beyond our solar system What is the universe expanding into? Lesson duration 06:07 1,804,266 Views
05:31 The physics of the universe Why don't perpetual motion machines ever work? Lesson duration 05:31 16,773,687 Views
