NASA

[pr126]

https://www.youtube.com/watch?v=rfYJEI6KjFg

[Sal1981]

"The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever." --- Konstantin Tsiolkovsky

[Baruch]

Given the cost of energy, and the large amount of energy required to put one kilo into orbit ... only governments, multinational corporations or plutocrats will get off the Earth.  The rest of us can't afford to.  So please don't trash this planet, thinking you can move to another one.