[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:14.00,0:00:16.00,Default,,0000,0000,0000,,Have you ever been floating in a swimming pool,
Dialogue: 0,0:00:16.00,0:00:18.00,Default,,0000,0000,0000,,all comfy and warm, thinking,
Dialogue: 0,0:00:18.00,0:00:20.00,Default,,0000,0000,0000,,"Man, it'd be cool to be an astronaut!
Dialogue: 0,0:00:20.00,0:00:21.00,Default,,0000,0000,0000,,You could float out in outer space,
Dialogue: 0,0:00:21.00,0:00:23.00,Default,,0000,0000,0000,,look down at the Earth and everything.
Dialogue: 0,0:00:23.00,0:00:24.00,Default,,0000,0000,0000,,It'd be so neat!"
Dialogue: 0,0:00:24.00,0:00:26.00,Default,,0000,0000,0000,,Only that's not how it is at all.
Dialogue: 0,0:00:26.00,0:00:27.00,Default,,0000,0000,0000,,If you are in outer space,
Dialogue: 0,0:00:27.00,0:00:28.00,Default,,0000,0000,0000,,you are orbiting the Earth,
Dialogue: 0,0:00:28.00,0:00:31.00,Default,,0000,0000,0000,,it's called free fall.
Dialogue: 0,0:00:31.00,0:00:32.00,Default,,0000,0000,0000,,You're actually falling towards the Earth.
Dialogue: 0,0:00:32.00,0:00:33.00,Default,,0000,0000,0000,,Alright, think about this for a moment.
Dialogue: 0,0:00:33.00,0:00:35.00,Default,,0000,0000,0000,,That's the feeling you get
Dialogue: 0,0:00:35.00,0:00:37.00,Default,,0000,0000,0000,,if you're going over the top of a roller coaster,
Dialogue: 0,0:00:37.00,0:00:40.00,Default,,0000,0000,0000,,going, like, "Whoooooaaaahhhh!"
Dialogue: 0,0:00:40.00,0:00:41.00,Default,,0000,0000,0000,,Only you're doing this the whole time
Dialogue: 0,0:00:41.00,0:00:42.00,Default,,0000,0000,0000,,you're orbiting the Earth
Dialogue: 0,0:00:42.00,0:00:43.00,Default,,0000,0000,0000,,for two,
Dialogue: 0,0:00:43.00,0:00:44.00,Default,,0000,0000,0000,,three,
Dialogue: 0,0:00:44.00,0:00:44.00,Default,,0000,0000,0000,,four
Dialogue: 0,0:00:44.00,0:00:45.00,Default,,0000,0000,0000,,hours,
Dialogue: 0,0:00:45.00,0:00:45.00,Default,,0000,0000,0000,,days,
Dialogue: 0,0:00:45.00,0:00:46.00,Default,,0000,0000,0000,,whatever it takes, right?
Dialogue: 0,0:00:46.00,0:00:48.00,Default,,0000,0000,0000,,So, how does orbiting work?
Dialogue: 0,0:00:48.00,0:00:50.00,Default,,0000,0000,0000,,Let's take a page from Isaac Newton.
Dialogue: 0,0:00:50.00,0:00:51.00,Default,,0000,0000,0000,,He had this idea,
Dialogue: 0,0:00:51.00,0:00:52.00,Default,,0000,0000,0000,,a little mental experiment.
Dialogue: 0,0:00:52.00,0:00:53.00,Default,,0000,0000,0000,,You take a cannon,
Dialogue: 0,0:00:53.00,0:00:54.00,Default,,0000,0000,0000,,you put it on top of a hill.
Dialogue: 0,0:00:54.00,0:00:56.00,Default,,0000,0000,0000,,If you shoot the cannon ball,
Dialogue: 0,0:00:56.00,0:00:57.00,Default,,0000,0000,0000,,it goes a little bit away.
Dialogue: 0,0:00:57.00,0:00:58.00,Default,,0000,0000,0000,,But if you shoot it harder,
Dialogue: 0,0:00:58.00,0:01:01.00,Default,,0000,0000,0000,,it goes far enough so that it lands
Dialogue: 0,0:01:01.00,0:01:03.00,Default,,0000,0000,0000,,a little bit past the curvature of Earth.
Dialogue: 0,0:01:03.00,0:01:04.00,Default,,0000,0000,0000,,Well, you can imagine
Dialogue: 0,0:01:04.00,0:01:06.00,Default,,0000,0000,0000,,if you shot it really, really, really hard,
Dialogue: 0,0:01:06.00,0:01:08.00,Default,,0000,0000,0000,,it would go all the way around the Earth
Dialogue: 0,0:01:08.00,0:01:10.00,Default,,0000,0000,0000,,and come back, boom!
Dialogue: 0,0:01:10.00,0:01:11.00,Default,,0000,0000,0000,,and, like, hit you in the backside or something.
Dialogue: 0,0:01:11.00,0:01:13.00,Default,,0000,0000,0000,,Let's zoom way back
Dialogue: 0,0:01:13.00,0:01:14.00,Default,,0000,0000,0000,,and put you in a little satellite
Dialogue: 0,0:01:14.00,0:01:16.00,Default,,0000,0000,0000,,over the North Pole of the Earth
Dialogue: 0,0:01:16.00,0:01:17.00,Default,,0000,0000,0000,,and consider north to be up.
Dialogue: 0,0:01:17.00,0:01:19.00,Default,,0000,0000,0000,,You're going to fall down and hit the Earth.
Dialogue: 0,0:01:19.00,0:01:23.00,Default,,0000,0000,0000,,But you are actually moving sideways really fast.
Dialogue: 0,0:01:23.00,0:01:24.00,Default,,0000,0000,0000,,So, when you fall down,
Dialogue: 0,0:01:24.00,0:01:26.00,Default,,0000,0000,0000,,you're going to miss.
Dialogue: 0,0:01:26.00,0:01:28.00,Default,,0000,0000,0000,,You're going to end up on the side of the Earth,
Dialogue: 0,0:01:28.00,0:01:29.00,Default,,0000,0000,0000,,falling down,
Dialogue: 0,0:01:29.00,0:01:32.00,Default,,0000,0000,0000,,and now the Earth is pulling you back in sideways.
Dialogue: 0,0:01:32.00,0:01:33.00,Default,,0000,0000,0000,,Alright, and so it's pulling you back in
Dialogue: 0,0:01:33.00,0:01:34.00,Default,,0000,0000,0000,,and you fall down,
Dialogue: 0,0:01:34.00,0:01:36.00,Default,,0000,0000,0000,,and so you miss the Earth again,
Dialogue: 0,0:01:36.00,0:01:38.00,Default,,0000,0000,0000,,and now you're under the Earth.
Dialogue: 0,0:01:38.00,0:01:39.00,Default,,0000,0000,0000,,And the Earth is going to pull you up,
Dialogue: 0,0:01:39.00,0:01:40.00,Default,,0000,0000,0000,,but you're moving sideways still.
Dialogue: 0,0:01:40.00,0:01:42.00,Default,,0000,0000,0000,,So, you're going to miss the Earth again.
Dialogue: 0,0:01:42.00,0:01:43.00,Default,,0000,0000,0000,,Now, you're on the other side of the Earth,
Dialogue: 0,0:01:43.00,0:01:46.00,Default,,0000,0000,0000,,moving upward and the Earth's pulling you sideways.
Dialogue: 0,0:01:46.00,0:01:48.00,Default,,0000,0000,0000,,Alright, so you're going to fall sideways,
Dialogue: 0,0:01:48.00,0:01:51.00,Default,,0000,0000,0000,,but you're going to be moving up and to a miss.
Dialogue: 0,0:01:51.00,0:01:53.00,Default,,0000,0000,0000,,And now you're back on top of the Earth again,
Dialogue: 0,0:01:53.00,0:01:54.00,Default,,0000,0000,0000,,over the North Pole,
Dialogue: 0,0:01:54.00,0:01:56.00,Default,,0000,0000,0000,,going sideways and falling down,
Dialogue: 0,0:01:56.00,0:01:57.00,Default,,0000,0000,0000,,and yep, you guessed it.
Dialogue: 0,0:01:57.00,0:02:01.00,Default,,0000,0000,0000,,You'll keep missing because you're moving so fast.
Dialogue: 0,0:02:01.00,0:02:03.00,Default,,0000,0000,0000,,In this way, astronauts orbit the Earth.
Dialogue: 0,0:02:03.00,0:02:05.00,Default,,0000,0000,0000,,They're always falling towards the Earth,
Dialogue: 0,0:02:05.00,0:02:07.00,Default,,0000,0000,0000,,but they're always missing,
Dialogue: 0,0:02:07.00,0:02:09.00,Default,,0000,0000,0000,,and therefore, they're falling all the time.
Dialogue: 0,0:02:09.00,0:02:10.00,Default,,0000,0000,0000,,They feel like they're falling,
Dialogue: 0,0:02:10.00,0:02:12.00,Default,,0000,0000,0000,,so you just have to kind of get over it.
Dialogue: 0,0:02:12.00,0:02:16.00,Default,,0000,0000,0000,,So, technically, if you ran fast enough and tripped,
Dialogue: 0,0:02:16.00,0:02:18.00,Default,,0000,0000,0000,,you could miss the Earth.
Dialogue: 0,0:02:18.00,0:02:20.00,Default,,0000,0000,0000,,But there's a big problem.
Dialogue: 0,0:02:20.00,0:02:24.00,Default,,0000,0000,0000,,First, you have to be going 8 kilometers a second.
Dialogue: 0,0:02:24.00,0:02:26.00,Default,,0000,0000,0000,,That's 18,000 miles an hour,
Dialogue: 0,0:02:26.00,0:02:28.00,Default,,0000,0000,0000,,just over Mach 23!
Dialogue: 0,0:02:28.00,0:02:29.00,Default,,0000,0000,0000,,The second problem:
Dialogue: 0,0:02:29.00,0:02:31.00,Default,,0000,0000,0000,,If you're going that fast,
Dialogue: 0,0:02:31.00,0:02:32.00,Default,,0000,0000,0000,,yes, you would orbit the Earth
Dialogue: 0,0:02:32.00,0:02:34.00,Default,,0000,0000,0000,,and come back where you came from,
Dialogue: 0,0:02:34.00,0:02:36.00,Default,,0000,0000,0000,,but there's a lot of air in the way,
Dialogue: 0,0:02:36.00,0:02:37.00,Default,,0000,0000,0000,,alright, much less people and things.
Dialogue: 0,0:02:37.00,0:02:40.00,Default,,0000,0000,0000,,So, you would burn up due to atmospheric friction.
Dialogue: 0,0:02:40.00,0:02:43.00,Default,,0000,0000,0000,,So, I do not recommend this.