I was just thinking

 

We get video from space and watch the astronauts floating around weightless.  They’re out in space weightless.

 

But what are they weightless in?  They’re in a space station that is on earth would weigh over 900,000 pounds.  900,000 pounds.  And what keeps this 900,000 pound space station in orbit around the earth and not zooming off into space?  Gravity.  Gravity is what holds satellites in orbit around the earth.  Gravity holds the earth in orbit around the sun.  There is gravity in space, yet our astronauts are floating around upside down weightless.  What’s up with that?