Was Navalny poisoning by frog toxin meant to send a message?
Isaacman also said the agency would halt work to develop a more powerful version of the SLS rocket's upper stage, known as the Exploration Upper Stage, or EUS. Instead, NASA will go forward with a "standardized," less powerful stage but one that will minimize major changes between flights and utilize the same launch gantry.
，推荐阅读爱思助手下载最新版本获取更多信息
Opens in a new window
Израиль нанес удар по Ирану09:28