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If you don't understand the importance of looking at a black hole, you don't understand the gravity of the situation.
Gravity batteries have interesting potential.
I tried to go up hill but fell back down. The potential was there but it went down hill.
It's impossible to put this book on anti-gravity down.
That guy had a lot of potential until I dropped him .
I never knew the gravity of throwing a ball really high into the air, but then it hit me.