November 24, 2015@elonmusk →
“Getting to space needs ~Mach 3, but GTO orbit requires ~Mach 30. The energy needed is the square, i.e. 9 units for space and 900 for orbit.”
Engagement vs. median curated tweet
1.5K
Likes
664
Retweets
85
Replies
Other tweets from the same period
“@ID_AA_Carmack Yep, good points. I hope you get back into space some day!”
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