BEYOND EARTH

 

1. ESCAPE VELOCITY

Quite ironically, the first thing needed to get off Earth is a velocity higher than the escape velocity of our planet, which is 25,000 m/s.  What is escape velocity, it is the speed, or rather, velocity required to escape the gravitational pull of our planet. Interesting fact: Black holes do not let light go out because their escape velocity is higher than c, the speed of light.


 

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