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: Christophe Bruneau 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
ESA

Major rehearsal takes Themis one step closer to flight

From the ESA Blogs.

Arstechnica

Rocket Report: Big deals for US launch firms, RFA One debut is delayed

"America won the first Space Race, and we can do it again."

European Spaceflight

ArianeGroup Completes Themis Wet Dress Rehearsal

ArianeGroup has completed a wet dress rehearsal of the Themis reusable booster demonstrator at the Esrange Space Centre in Sweden, providing the first substantive update on the vehicle’s test campaign in more than ten months. The rehearsal…

European Spaceflight

SSC Space Opens Orbital Launch Control Center at Esrange

SSC Space has officially opened the Esrange Space Center’s new Orbital Launch Control Center, which will be used to manage future rocket launches from the facility. The Esrange Space Center in northern Sweden has hosted suborbital rocket l…

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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