Tranche 1 Transport Layer – Spaceflight Now

March 15, 2026

Breaking News

[ March 14, 2026 ] NASA Administrator teases further Artemis program updates in one-on-one interview Artemis
[ March 13, 2026 ] NASA ready for another shot at launching Artemis 2 moon mission Artemis
[ March 13, 2026 ] SpaceX launches 25 Starlink satellites on Falcon 9 rocket from Vandenberg Space Force Base Falcon 9
[ March 13, 2026 ] SpaceX launches Starlink mission from Cape Canaveral on cloudy Saturday morning Falcon 9
[ March 10, 2026 ] NASA inspector general assesses agency’s management of moon lander risk Artemis

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).