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Space Trash

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Subido el 28 de mayo de 2007 por EducaMadrid

260 visualizaciones

NASA Why? Files segment explaining how trash is recycled and thrown away in outer space and how that differs from how it is done on the earth.

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Hi, I'm Lisa Blansky, and I work on the International Space Station program at the Johnson Space 00:00:00
Center. 00:00:08
What can I do for you today? 00:00:09
We were wondering how you take out the trash in space. 00:00:10
On the space station, the astronauts have trash cans like we do on Earth, except they 00:00:13
have a few differences. 00:00:17
What kind of differences? 00:00:19
When you're in a weightless environment, the trash has a tendency to float out of the cans, 00:00:20
so we have special openings to keep it inside, and this way it doesn't bother the astronauts. 00:00:25
Trash is bad enough sitting on the ground. 00:00:29
I wouldn't want it flying around everywhere. 00:00:31
Actually, the astronauts attach the can to the wall so it doesn't float away. 00:00:33
At home, I use the three R's, reduce, reuse, and recycle. 00:00:37
Do astronauts use these in space? 00:00:41
Actually, there's not a whole lot to recycle on the International Space Station. 00:00:44
We try to reduce the amount of items that become trash on orbit before they go up. 00:00:48
How do you do that? 00:00:52
One of the ways is by using more efficient packing material. 00:00:53
We also reuse the clothing items like the shorts and the pants. 00:00:57
If you did have any trash, couldn't you just launch it into space? 00:01:01
One of the reasons we don't launch trash into space is because it becomes space trash, and 00:01:04
that can be very dangerous. 00:01:09
How can space trash be dangerous? 00:01:11
Any trash injected into space travels at a high rate of speed, and at high speeds, even 00:01:14
the smallest piece can do damage to the vehicle. 00:01:19
A piece that is 10 centimeters long can cause as much damage as 25 sticks of dynamite. 00:01:22
25 sticks of dynamite? 00:01:27
That's scary. 00:01:29
What do you do with the trash cans when they're full? 00:01:31
When the cans are full, we put it in the Russian unmanned vehicle called Progress. 00:01:33
The Progress undocks from the International Space Station and burns up in Earth's atmosphere. 00:01:38
We also use the space shuttle to return hardware that is reusable. 00:01:43
Wow, that's one way to recycle and reuse. 00:01:47
I didn't know a space shuttle could carry trash. 00:01:50
That's a lot better than having trash fly all through space. 00:01:53
That's exactly right. 00:01:56
Thanks for your help, Ms. Polanski. 00:01:58
My pleasure, kids. Anytime. 00:02:00
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Idioma/s:
en
Niveles educativos:
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Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
260
Fecha:
28 de mayo de 2007 - 15:33
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
02′ 02″
Relación de aspecto:
4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:
480x360 píxeles
Tamaño:
12.41 MBytes

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