T1H-1

Overview

Destination: Suborbital
Mission: Test Flight

Suborbital Launch Complex 3B Esrange Space Center
T1H - Launch Complex 3 Landing Pad

First low-altitude hop test of a Themis demonstrator, with a targeted altitude up to 100 m.

Updates


Nosu • Sept. 16, 2025, 9:15 a.m.

Adding launch


Themis Demonstrator

Family:
Configuration:

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.

See Details
Specifications
  • Stages
    1
  • Length
    28.0 m
  • Diameter
    3.5 m
  • Fairing Diameter
  • Launch Mass
    170.0 T
  • Thrust
    980.0 kN
Family
  • Name
    Themis Demonstrator
  • Family
  • Variant
  • Alias
  • Full Name
    Themis Demonstrator
Payload Capacity
  • Launch Cost
  • Low Earth Orbit
  • Geostationary Transfer Orbit
  • Direct Geostationary
  • Sun-Synchronous Capacity

Booster Info


T1H


Type: Core
Flight Proven: No

Landing Information

The Themis T1H demonstrator will attempt a soft vertical landing back at its launch site.

Landing Attempt Confirmed

ArianeGroup

ArianeGroup

(AG)

CEO: Martin Sion Founded: 2015 Successes: 0 Failures: 0 Pending: 0

Agency Type:

ArianeGroup (formerly Airbus Safran Launchers) is an aerospace company based in France. A joint venture between Airbus and Safran, the company was founded in 2015 and is headquartered in Issy-les-Moulineaux. It consists of three core arms: aerospace, defence and security.

INFO WIKI

Related News

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European Spaceflight

ESA “Waiting for Spring” to Launch Themis Reusable Rocket Demonstrator

The European Space Agency (ESA) has revealed that, with the launch facility in Sweden currently “under snow,” it is “waiting for spring” to launch an initial hop test of its Themis reusable rocket booster demonstrator. ESA began work on th…

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ArianeGroup Completes Themis Integration Ahead of Combined Tests

ArianeGroup has announced that the first Themis reusable rocket demonstrator has been fully integrated and is on its own four legs on a launch pad in Sweden. The demonstrator will now be put through a combined test campaign before an initi…

Arstechnica

After a very slow start, Europe’s reusable rocket program shows signs of life

Although Themis is making progress, the program is several years behind schedule.

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Themis stands on the launch pad

From the ESA Blogs.

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