This
Week in
Physics
Let's Go to Mars!
But how long will it take to get there?
I'd Rather Go to a Super Nova.
Maybe so, but you wouldn't last very long.
What is the Mass of the Earth?
Very light is all the people leap off the ground at the same time.
Look! There in the sky! It's a rocket ship.
How soon do you think it will arrive here on the Planet Earth?
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