December 8, 2025
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Breaking News
  • [ December 7, 2025 ] Live coverage: SpaceX to launch of 3,000th Starlink satellite in 2025 on record-setting 32nd flight of Falcon 9 booster Falcon 9
  • [ December 7, 2025 ] SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Vandenberg SFB Falcon 9
  • [ December 5, 2025 ] International Space Station prepares for new commander, heads into final five years of planned operations Mission Reports
  • [ December 4, 2025 ] SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Vandenberg SFB Falcon 9
  • [ December 4, 2025 ] Orion hatch ‘blemish’ delays launch day rehearsal for Artemis 2 astronauts Mission Reports

Mark Sirangelo

Members

Q&A with Mark Sirangelo, leader of Sierra Nevada Space Systems

October 8, 2015 Stephen Clark

Sierra Nevada Corp. has business activity across a spectrum of programs, from Orbcomm communications satellites to parts on the New Horizons mission to Pluto, but all eyes are now on the company’s Dream Chaser spacecraft. Sierra Nevada’s Mark Sirangelo met with reporters at the 2015 International Symposium for Personal and Commercial Spaceflight.

News Headlines

  • Live coverage: SpaceX to launch of 3,000th Starlink satellite in 2025 on record-setting 32nd flight of Falcon 9 booster
    December 7, 2025
  • SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Vandenberg SFB
    December 7, 2025
  • International Space Station prepares for new commander, heads into final five years of planned operations
    December 5, 2025
  • SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Vandenberg SFB
    December 4, 2025
  • Orion hatch ‘blemish’ delays launch day rehearsal for Artemis 2 astronauts
    December 4, 2025
  • Jared Isaacman makes second appeal for NASA administrator position
    December 3, 2025
  • Sunset SpaceX launch adds 29 more Starlink satellites into low Earth orbit
    December 2, 2025
  • Arianespace launches South Korean Earth observation satellite on Vega-C flight
    December 2, 2025
  • SpaceX launches evening Falcon 9 rocket from Vandenberg SFB
    December 1, 2025
  • SpaceX kicks off December with predawn Falcon 9 rocket launch
    November 30, 2025
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  • Members
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    • Members Content
  • Live
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