Suni Williams and Butch Wilmore will now not come home until “no earlier than late March 2025”, back from February, to allow ...

Space Station trajectory data is now available to the public! This data, called an ephemeris, is generated by the ISS Trajectory Operations and Planning Officer (TOPO) flight controllers in the ...

另外，我们之前设定衞星是以圆形轨道环绕地球，这是假设地球拥有一个均匀引力场的结果。然而现实上，地球并非一个完美球体，其质量分布并非完全平均，兼且太空中还有太阳及月球等提供引力，因此衞星并非身处一个均匀引力场。这样，衞星有时会被带离预定轨道，因此我们亦 ...

NASA plans to buy LTV services, not the rover itself, just as it purchases cargo and crew missions to the International Space Station from SpaceX and other providers, who retain ownership of the ...