Chennai, July 17 (UNI) The health condition of decorated piot Shubhanshu Shukla, who became the first Indian astronaut to travel to International Space Station and returned after a 18-day stay, was st ...

在国际空间站（ISS）步入倒计时、2030年后行将坠入大气层之际，NASA却像护犊子般死死抓住波音的星际客船不放——这款饱受延误、故障缠身、已烧掉20多亿美元的「问题备胎」。太空观察家斯蒂芬·克拉克最新发表一篇独家报道，深刻剖析直击要害：不是因为龙飞 ...