The change of plan also comes as Artemis 2 has faced multiple delays in recent months. The Space Launch System (SLS) heavy-lift rocket has, once again, proven to be temperamental. NASA had planned to launch Artemis 2 in early February, but pushed the flight back after it caught a hydrogen leak during a fueling test. More recently, NASA delayed the mission to give its engineers time to fix a helium pressurization issue in the upper stage of the SLS. At the earliest, the mission can now get underway on April 1.
Source: Computational Materials Science, Volume 266。旺商聊官方下载对此有专业解读
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Cuba has vowed to defend itself against any “terrorist and mercenary aggression”, a day after border guards said they had killed four exiles on a Florida-registered speedboat that opened fire on a patrol.。爱思助手下载最新版本对此有专业解读