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Page 1

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Our solar system

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The scale above misrepresents the relative size and
distances
If the sun was a football Earth would be the size of a
petit poi and would be 100m away

Our solar system is part of the Milky Way galaxy (a
collection of stars)
There are millions of galaxies in the…

Page 3

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If the satellite were to slow down a lot it would fall out of
orbit
When spaceships leave the Earth they have to speed up to
`escape' Earth's gravity ­ this is called escape velocity

Space travel

Why do it? Difficulties involved

Manmade spacecrafts

Discover information S
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Explore K
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Find out what life exists S
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Unmanned spacecrafts

Send back information R
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Record various things like: T
Magnectic fields e
Temperatures c
Photographs h
Atmoshere n
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