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

Cosmic_Penguin • Oct. 6, 2026, 2:33 p.m.

NET late 2026.



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
European Spaceflight

ESA Director “Not Sure” Themis Will Make Its First Flight in 2026

The European Space Agency’s (ESA) Director of Space Transportation, Géraldine Naja, said on 22 October that she was uncertain whether the agency would be able to complete the first flight of its Themis reusable rocket demonstrator before t…

Arstechnica

Rocket Report: A rare Falcon 9 scrub; is it just about Vulcan's time to shine?

"I can say we’re weeks away from launching on Vulcan."

ESA

Themis completes second fuelling rehearsal

ESA’s Themis reusable rocket stage demonstrator successfully completed its second ‘wet dress rehearsal’ at Esrange Space Center in Sweden on 29 September, testing the vehicle and ground procedures under representative cryogenic conditions.

European Spaceflight

The EU Extends SALTO Deadline Again as Themis Hop Test Slips

The European Commission has extended the deadline for the SALTO reusable launcher project to the end of 2026, giving the programme another three months to complete the first hop test of Europe’s Themis reusable rocket demonstrator. Accordi…

European Spaceflight

ArianeGroup Completes Second Themis Wet Dress Rehearsal

The European Space Agency announced that ArianeGroup and Swedish Space Corporation completed a second wet dress rehearsal of the Themis reusable rocket demonstrator at Esrange in Sweden. ESA announced the completion of the latest rehearsal…

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