If Earth Was 50% Larger, We Might Be Stuck Here
By Ross Pomeroy
July 06, 2017
To many people, mankind's "giant leap" is synonymous with Neil Armstrong's "small step" onto the surface of the Moon.
NASA astronaut, chemical engineer, and renaissance man Donald Pettit disagrees. The leap, he says, actually occurred far closer to home.
"The giant leap for mankind is not the first step on the Moon, but in attaining Earth orbit," he wrote in 2012.
http://www.realclearscience.com/blog/2017/07/06/if_earth_was_50_larger_we_might_be_stuck_here.html
