HOUSTON — NASA hosted a welcome home party tonight for astronauts returning from their recent space missions. The event included two astronauts whose planned two-week trip extended to nine months.

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CRS-32 launched on a SpaceX Falcon 9 rocket from NASA's Kennedy Space Center in Florida on April 21. The spacecraft docked with the zenith port of the station's Harmony module a day later, delivering ...

The physics challenges of using spacecraft to track moving targets on the ground or in the air are daunting, requiring enormous power generation and aperture size to achieve similar signal-to-noise ...