Tranche 1 Transport Layer – Spaceflight Now

January 11, 2026

Breaking News

[ January 10, 2026 ] SpaceX deploys NASA’s Pandora, other smallsats amid 1st ‘Twilight’ rideshare mission Falcon 9
[ January 9, 2026 ] L3Harris announces $845 million majority sale of Space Propulsion and Power Systems business News
[ January 9, 2026 ] Crew-11 to cut mission short and return to Earth due to medical issue Mission Reports
[ January 8, 2026 ] FCC gives SpaceX “green light” to expand Starlink constellation to 15,000 satellites Falcon 9
[ January 7, 2026 ] NASA weighs an earlier end to the Crew-11 mission after a ‘medical situation’ with an ISS crew member postpones first spacewalk of 2026 Mission Reports

New U.S. military satellite constellation takes shape with first launch from Vandenberg SFB

September 12, 2025 Will Robinson-Smith

The Space Development Agency’s Proliferated Warfighter Space Architecture constellation is expected to deliver global coverage beginning in 2027. Launch from Vandenberg Space Force Base occurred at 7:12 a.m. PDT (10:12 a.m. EDT / 1412 UTC).

Launch preview: Space Development Agency, SpaceX to launch next-gen national security satellites

September 10, 2025 Will Robinson-Smith

The 21 satellites from York Space Systems are the first in the SDA’s Tranche 1 Transport Layer satellite constellation. SpaceX launched from pad 4 East at Vandenberg Space Force Base at 7:12 a.m. PDT (10:12 a.m. EDT / 1412 UTC).