SpaceX

Landing Zone 4

Tranche 1 Transport Layer A is one of six missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Transport Layer constellation, which will provide assured, resilient, low-latency military data and connectivity worldwide to the full range of warfighter platforms from Low Earth Orbit satellites.

The constellation will be interconnected with Optical Inter-Satellite Links (OISLs) which have significantly increased performance over existing radio frequency crosslinks. It is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance.

This launch carries 21 satellites manufactured by Northrop Grumman.

SDA-T1TL-A

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer A

Vandenberg SFB

Space Launch Complex 4E

Falcon 9 Block 5

Launch Date: October 9, 2026 
Launch Time:  12:39 a.m. PDT, 0739 UTC, 09:39 CEST 
Launch Window: Open until 2:11 a.m. PDT
Launch Site: SLC-4E - Vandenberg Space Force Base, California
Targeted Orbit: Polar Orbit
Launch Inclination: South
Launch Status: Nominal orbit insertion, Falcon 9 booster landed successfully at the Landing Zone 4, Vandenberg Space Force Base, CA

Mission: Tranche 1 Transport Layer A
Client: United States Space Force Development Agency (SDA)
Launch Provider: SpaceX

Launcher System: Falcon 9 (Booster 1103 - Turnaround time 54 days)
Flight for the Booster: 6
Previous Flights of the Booster: 5 - NROL-179, SDA-T1TL-E, and three Starlink missions
Booster Landing: Landing Zone 4 (LZ-4) Vandenberg Space Force Base

Price: $74 million (without payload)
Diameter: 3,7 m
He...

English

SpaceX - Falcon 9 - Tranche 1 Transport Layer A - SLC-4E - VSFB, CA - October 10, 2026

Unofficial Re-stream

Watch a live coverage as SpaceX launches a Falcon 9 rocket from California carrying satellites for the Space Development Agency's Proliferated Warfighter Space Architecture satellite constellation. Liftoff from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base is currently is now scheduled for 12:39 a.m. PDT (3:39 a.m. EDT (0739 UTC) on Saturday, Oct. 10.

The first-stage booster, serial number B1103, making its sixth flight, will return to a land at LZ-4 at Vandenberg.

The SDA T1TL-A mission will head out across the Pacific Ocean on a southerly trajectory upon departure from Vandenberg.

Live commentary will be provided starting about 30 minutes prior to launch.

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Live: SpaceX Falcon 9 rocket launches from California for U.S. Military's Space Development Agency

Unofficial Webcast

SDA's Fourth Tranche 1 Mission

Official Webcast

Of Course I Still Love You

A batch of 27 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Space X Starlink Mission Patch

Falcon 9 Block 5 | Starlink Group 15-25

Starlink Mission

Landing Zone 40

35th commercial resupply services mission to the International Space Station operated by SpaceX. The flight will be conducted under the second Commercial Resupply Services contract with NASA.

Cargo Dragon 2 brings supplies and payloads, including critical materials to directly support science and research investigations that occur onboard the orbiting laboratory.

Falcon 9 Block 5 | Dragon CRS-2 SpX-35

Cape Canaveral Space Force Station

Space Launch Complex 40

Cargo Dragon 2

Tune in as a new shipment of science and supplies lifts off to the International Space Station.

NASA and SpaceX are targeting 6:33 a.m. EDT (1033 UTC), Tuesday, Oct. 13, for the next cargo launch of SpaceX's Dragon spacecraft to the space station. Dragon will lift off from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida and is scheduled to dock autonomously at around 11:00 a.m. EDT (1500 UTC) on Thursday, Oct. 15, to the space-facing port of the station’s Harmony module.

Learn more about the mission and the launch timeline: https://go.nasa.gov/3WhHUPG

NASA's SpaceX 35th Commercial Resupply Services Launch

Coverage of the Launch of NASA’s SpaceX 35th Cargo Resupply Mission to the International Space Station

NASA’s SpaceX 35th Commercial Resupply Services Launch

CRS-35 Mission

A classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites based on SpaceX’s Starshield satellite bus, based on locations of ascent rocket stage drop zones being fits with previous SDA Transport Layer launches.

Falcon 9 Block 5 | USSF-481

USSF-481 Mission

Mitsubishi Heavy Industries

MMX is a Japanese scientific mission to land on Phobos, one of the two moons of Mars, to collect samples before bringing them back to Earth.

The mission includes a small French/German rover to explore the surface of Phobos.

H3-24 | Martian Moons eXploration (MMX)

Tanegashima Space Center

Yoshinobu Launch Complex LP-2

H3-24

Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

45 satellites will be carried on each Vulcan launch.

Vulcan VC6L | Amazon Leo (LV-01)

Space Launch Complex 41

Vulcan VC6L

ISRO

Ride-share launch of multiple satellites, including the in-orbit refueling demonstration satellite AayulSAT-1A from OrbitAID Aerospace. Other payload's identities TBD.

SSLV | AayulSAT-1A & others

Satish Dhawan Space Centre

Satish Dhawan Space Centre First Launch Pad

SSLV

Arianespace

Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

35-40 satellites will be carried on each Ariane 6 launch.

Ariane 64 Block 2 | Amazon Leo (LE-04)

Guiana Space Centre

Ariane Launch Area 4

Ariane 64 Block 2

CASC

Long March 12A Landing Site

Second test launch of CASC/SAST’s Long March 12A rocket. Payload identities are TBD.

Long March 12A | Flight 2

Jiuquan Satellite Launch Center

Long March 12A Pad

Long March 12A

Dedicated rideshare flight to a mid-inclination orbit with dozens of small microsatellites and nanosatellites for commercial and government customers.

Falcon 9 Block 5 | Bandwagon 5 (Dedicated Mid-Inclination Rideshare)

This is a replacement satellite for the Indian Regional Navigation Satellite System. The constellation will provide India with an alternative to GPS and will be used for military and civilian use. Located at a geosynchronous orbit, the system will be operated by the Indian government.

GSLV Mk II | IRNSS-1L (NVS-03)

Satish Dhawan Space Centre Second Launch Pad

GSLV Mk. II

ROSCOSMOS

Progress resupply mission to the International Space Station.

Soyuz 2.1b | Progress MS-36 (97P)

Baikonur Cosmodrome

31/6

Soyuz 2.1b

Second of EUMETSAT's second generation of Metop weather satellites.

Ariane 62 | Metop-SG B1

Ariane 62

First uncrewed orbital test flight of the Gaganyaan capsule.

LVM-3 | Gaganyaan-1

Gaganyaan

Launch Vehicle Mark-3 (GSLV Mk III)

TDS-01 (Technology Demonstration Satellite-01) is an Indian geostationary orbit technology demonstration satellite carrying payloads for the Indian Space Research Organisation (ISRO)’s Institute of Plasma Research, Gandhinagar and the CSIR-CEERI, Pilani. 

Payloads to be tested included an internally developed 300 mN electric powered thrusters, atomic clocks, travelling wave tube amplifiers (TWTA) & a quantum communication suite (QuTDS).

PSLV-XL | TDS-01

PSLV XL

This is the 25th flight of the Orbital ATK's uncrewed resupply spacecraft Cygnus and its 24th flight to the International Space Station under the Commercial Resupply Services contract with NASA.

Falcon 9 Block 5 | Cygnus CRS-2 NG-25

Classified payload for the United States Space Force

Falcon Heavy | USSF-75

Kennedy Space Center

Launch Complex 39A

Falcon Heavy

Tranche 1 Transport Layer D is one of six missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Transport Layer constellation, which will provide assured, resilient, low-latency military data and connectivity worldwide to the full range of warfighter platforms from Low Earth Orbit satellites.

The constellation will be interconnected with Optical Inter-Satellite Links (OISLs) which have significantly increased performance over existing radio frequency crosslinks. It is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance.

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer D

Rocket Lab

LOXSAT 1 is a demonstration satellite of a complete cryogenic oxygen fluid management system in orbit, developed by Eta Space and sponsored by NASA's Tipping Point program.

The system will be integrated on a Rocket Lab Photon-LEO satellite bus and collect critical cryogenic fluid management data in orbit for 9 months, demonstrating capabilities of in-space cryogenic storage and transferal. Eta Space plans to use technology developed for this mission to develop a truly commercial depot intended to serve multiple customers in the future.

Electron | LOXSAT 1

Rocket Lab Launch Complex 1

Unknown Pad

Electron

Tranche 1 Transport Layer F is one of six missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Transport Layer constellation, which will provide assured, resilient, low-latency military data and connectivity worldwide to the full range of warfighter platforms from Low Earth Orbit satellites.

The constellation will be interconnected with Optical Inter-Satellite Links (OISLs) which have significantly increased performance over existing radio frequency crosslinks. It is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance.

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer F

Up to 18 satellites manufactured by MDA for Canadian satellite operator Telesat's Lightspeed constellation.

Falcon 9 Block 5 | Telesat Lightspeed 2

Isar Aerospace

Third test flight of the Isar Spectrum launch vehicle. This launch will carry various satellites including R-Space’s AT-Astra/IOD-01, which will perform in-orbit demonstrations for ENPULSION, SUNBOOSTER GmbH, and Synopsis Planet.

Rocket Launches Today