Why is there gravity?

[Anomalocaris]

Our universe just barely has gravity.

Really.

It is ASTONISHINGLY weak.

Think about it, the ENTIRE earth is pulling on your kids report card and the puny little teeny tiny Scooby Doo refrigerator magnet COMPLETELY overpowers it !!!!!!!!!


Gravity ?? Meh !!!

Jump off a tall building with a magnet in your hand and see if it saves you. What will you think of gravity when you fall? Will it be Meh !!! ?

Using magnets, taking advantage of the dipole nature of water molecules in your cells, to levitate you against earth's gravity? It can certainly be done.

Here is it being done to a frog:

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No, but in the end, it will be electromagnetism that makes you go *splash*

Yes, but the pieces still come back down to earth, yoked to gravity as they are.

It takes the liberatable electromagnetic energy in about 3000 tons of stuff to wrestle 20 tons of stuff out of clutches of earth's gravity.

I wonder what is the ratio between total chemical energy available in the earth and earth's gravitational binding energy. I suspect earth's gravitational binding energy exceeds total available chemical energy by a large amount. Even if earth was made all of TNT, setting all that off won't unbind the earth.