Tranche 1 Transport Layer – Spaceflight Now

November 11, 2025

Breaking News

[ November 11, 2025 ] Rocket Lab delays debut of Neutron rocket to 2026 Neutron
[ November 10, 2025 ] Florida annual launch record broken with late-night Starlink flight Falcon 9
[ November 8, 2025 ] Poor weather prevents Blue Origin from launching NASA’s Mars-bound ESCAPADE mission New Glenn
[ November 7, 2025 ] SpaceX launches Sunday Starlink mission following Saturday scrub Falcon 9
[ November 6, 2025 ] Issue with Atlas 5 booster liquid oxygen vent valve causes second scrub of ViaSat-3 F2 launch Atlas 5

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).