Elon Musk @elonmusk
@Erdayastronaut @thesheetztweetz @BryceSpaceTech @SpaceX @ulalaunch @torybruno @MHI_Group @roscosmos @Peter_J_Beck To revolutionize space, the right metric is mass to orbit or you could translate that to # of useful satellites brought to orbit. No substitute for mass though. Scale don’t lie. — PolitiTweet.org
