Go to technology
Nasa is adding an extra mission to its Artemis programme before it attempts to land astronauts on the Moon for the first time in half a century.
，更多细节参见safew官方版本下载
But in the worst-case scenario, the Deorbit Vehicle won’t be ready. Without it, a protocol agreed on in 2024, which relies on the Russian Progress spacecraft, could come into play. There will be vexing trade-offs to consider. Allowing the ISS to descend toward Earth on its own saves gas, which the ISS will need when it’s finally time to eject into the atmosphere and ensure a burial at sea. But a slow descent jeopardizes the machinery needed to maintain remote control.，更多细节参见旺商聊官方下载
Those efforts also will impact the U.S. space agency's timeline for the future Artemis missions, moving up the revised Artemis III flight to the middle of 2027, which could make way for Artemis IV and Artemis V at the beginning and end of 2028. Under the new direction, Artemis IV would be the first mission to put astronaut boots on the lunar surface.，这一点在Line官方版本下载中也有详细论述