Everest remains one of the safest tall ultra high altitude peaks to climb simply because of all the infrastructure.

珠穆朗玛峰仍然是最安全的超高海拔山峰之一，仅仅是因为那里的基础设施。

Last Tuesday, after several delays, tech billionaire Jared Isaacman's chartered SpaceX flight finally took off and reached a peak altitude of about 870 miles (1,401 kilometers).

上周二，经过几次延误后，科技业亿万富翁贾里德·艾萨克曼的SpaceX包机终于起飞，抵达了约870英里(1401公里)的峰值高度。