Sierra Space, one of the sector's most valuable private companies, laid off several hundred employees and contractors this week, CNBC has learned. A Sierra Space spokesperson confirmed the company let ...

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LOUISVILLE, Colo.--(BUSINESS WIRE)--Sierra Space, a leading commercial space-tech company that is Building a Platform in Space to Benefit Life on Earth®, announced today that final testing and launch ...

NASA announced the four-person crew that will make up the Artemis III mission, giving more details about the roughly two-week mission that calls for Orion to dock with both a Blue Origin and SpaceX ...