Levers, or failing that a catapult.
Job, jobbed!

Impossible is a word used to save lives

"Hey I can Fly " " thats impossible" "oh right I won't jump off a cliff then"

But some things really are impossible (like perpetual motion)

We can't even all get along on this planet, why are we contaminating another? lol

First things first people.

Like getting rid of our dependence of fossil fuels.

Accessing other planets would help with that.

That's completely different from space travel.

Perpetual motion is possible in space.

Listen to the man...

http://youtu.be/sG_xGzpSOfA

Jumping off a cliff and space travel have a lot in common (A very high % of Astronaughts Die)

And no perpetual motion is NOT possible in space

Its not possible anywhere
the law of Entropy says that Energy is expended by movement and that it is a property of matter

Nothing is perpetual
indeed nothing moves without an energy source at some point

The chemical energy of the Sun provides most of the power in our solar system (including the solar winds) for example

But any system no matter how low in friction or gravity runs down eventually (unless there is an external energy source)

this is one major reason why interstellar travel is improbable

Knowing humans I doubt it would be long before we start fighting each other planet to planet.

Hours probably

I'm hoping it won't come to that. You are however right.