飞船在高地球轨道上停留的时间并不长，SpaceX就开始降低高度。到今天早上，龙飞船和北极星黎明号机组人员已经在1400km轨道完成了六次绕地球飞行，然后在大约5个小时的时间里，飞船进行了四次燃烧，降低到大约190乘742公里的轨道，为即将到来的的太空 ...

The research in the Polaris program, planned to be three flights, is particularly focused on human health and the effects of ...

An update to a story we first told you about last month about physicians at the Medical College of Georgia working with the ...

Earth orbit that included the world’s first commercial spacewalk as it aims to splash down off Florida’s coast.

The crew of the US Polaris Dawn mission returned to Earth early Sunday, completing the commercial human spaceflight mission.

SpaceX's Polaris Dawn mission was a spaceflight for the ages. Here's what the historic mission was like from launch to ...

The four Polaris Dawn astronauts splashed down safely off the coast of Florida today (Sept. 15), bringing an end to their ...

In an exclusive interview with NBC’s Lester Holt, which will air on NBC Nightly News on Tuesday, the crew — billionaire ...

The Polaris Dawn crew safely returned to Earth Sunday morning.. The Dragon capsule carrying the mission’s four astronauts — ...

这一天，美国太空探索技术公司 SpaceX 的“北极星黎明”（Polaris Dawn）任务成功实现了世界首次商业太空行走，两名平民宇航员进入了太空，为私人太空探索领域树立了新的里程碑。 “北极星黎明”任务于当地时间 9 月 10 ...

美国佛罗里达州，周二（10日）迎来了太空探索技术公司SpaceX的又一历史性时刻。搭载猎鹰9号火箭的“北极星黎明号”（Polaris ...

For five days, the crew of the Polaris Dawn mission completed a number of objectives that could one day bolster deep-space ...