Overview
Themis Demonstrator | T1H-1
To Be DeterminedLaunch Complex 3B, Esrange Space Center
September 30, 2026 — 00:00 UTC
Image credit: ArianeGroup
Launch Provider
European Space Agency
- Country
- France, Italy, Germany, Spain, Switzerland, United Kingdom, Austria, Sweden, Portugal, Netherlands, Hungary, Poland, Denmark, Czechia, Romania, Norway, Finland, Greece, Estonia, Ireland, Luxembourg, Belgium, Slovenia
- Founded
- 1975
- Leadership
- Director General: Josef Aschbacher
- Launch Record
- 6 success, 1 failed
The European Space Agency is an intergovernmental organisation of 22 member states. Established in 1975 and headquartered in Paris, France, ESA has a worldwide staff of about 2,000 employees. ESA's space flight programme includes human spaceflight (mainly through participation in the International Space Station program); the launch and operation of unmanned exploration missions to other planets and the Moon; Earth observation, science and telecommunication; designing launch vehicles; and maintaining a major spaceport, the Guiana Space Centre at Kourou, French Guiana.
Mission
T1H-1
- Type
- Test Flight
- Target Orbit
- Suborbital
First low-altitude hop test of a Themis demonstrator, with a targeted altitude up to 100 m.

Launch Vehicle
Themis Demonstrator
- Height
- 28.0 m
- Diameter
- 3.5 m
- Liftoff Mass
- 170.0 t
- Liftoff Thrust
- 980.0 kN
- Reusable
- Yes
- Launch Success
- 0
Themis is an ESA rocket prototype – a flagship European demonstrator for low-cost rocket recovery and reuse technologies. Powered by the reusable, methane-fuelled engine Prometheus, it is developed with ArianeGroup as prime contractor and building on decades of European research and experience in rocketry and space operations, Themis is designed to launch, land vertically and live on for another mission.

Booster / First Stage
Core — T1H
- Serial
- T1H
- Status
- active
- Flight Proven
- No
- Landing Attempt
- Yes
- Landing Success
- Unknown
- Landing Site
- Launch Complex 3 Landing Pad (LC3LP)
Launch Site
Launch Complex 3B, Esrange Space Center
Launch complex for Themis test flights at Esrange.
Latest Updates
NET Q2 (spring) 2026
January 08, 2026 — 15:44 UTC
Adding launch
September 16, 2025 — 09:15 UTC