它的潜在竞争对手是埃隆·马斯克(elon musk)的航天公司spacex,但
elon musk's spacex wants to fire passengers using ballistic
elon musk unveils spacex dragon v2 spacecraft
伊隆·马斯克(elon musk)与旗下火箭公司spacex研发的大型猎鹰火箭
file photo, elon musk, founder, ceo, and lead designer of spacex