European Space AgencyThemis DemonstratorLaunch Complex 3B, Esrange Space Center
T1H-1
Launch window
No countdown — this launch time is not yet known to the minute.NET Q4 2026Add to calendar
Image: ArianeGroup
Summary
The European Space Agency’s Themis Demonstrator conducts T1H-1, its first low-altitude hop test, targeting up to 100 meters from Esrange’s Launch Complex 3B.
- Watch
- No webcast announced yet.
- Vehicle
- Themis Demonstrator · European Space Agency
- Booster
- T1H · flight 1 · Return to Launch Site at Launch Complex 3 Landing Pad0/0 landed here
- Mission
- Test Flight · Suborbital (Sub)for ESA
- Milestone
- Planned as the 1st Themis Demonstrator flightEuropean Space Agency's 8th launch1st this year
Flight preview
Orbit: representative
Target from padside's flight model. Not a catalogued object; this panel switches to the tracked orbit once the object is catalogued. Ascent drawn from padside's representative profile.
About this launch
T1H-1 is expected to launch on an European Space Agency Themis Demonstrator from Launch Complex 3B, Esrange Space Center in Q4 2026. It is European Space Agency's 8th launch and 1st this year. It is planned as the 1st Themis Demonstrator flight. Booster T1H flies for the 1st time and will attempt a landing at Launch Complex 3 Landing Pad. The payload is bound for Suborbital (Sub).
First low-altitude hop test of a Themis demonstrator, with a targeted altitude up to 100 m.
News
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."
ArianeGroup Completes Second Themis Wet Dress RehearsalThe 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 on 7 October, saying that the test had taken place on 29 September. As with the first wet dress rehearsal, […]
Themis completes second fuelling rehearsalESA’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.
The EU Extends SALTO Deadline Again as Themis Hop Test SlipsThe 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. According to the European Commission’s project database, the reuSable strAtegic space Launcher Technologies & Operations (SALTO) initiative is now […]
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."
ArianeGroup Completes Themis Wet Dress RehearsalArianeGroup 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 was conducted on 23 July by teams from ArianeGroup and SSC Space, the commercial entity that manages the […]
Major rehearsal takes Themis one step closer to flightFrom the ESA Blogs.
Pad
Launch Complex 3B, Esrange Space Center
Planned as the 1st launch from Launch Complex 3B, 1st this year · 1st from Esrange Space Center
0 launches from this pad · 0 from Esrange Space Center
under an hour after the previous launch from this pad
Updates
Questions
When does T1H-1 launch?
T1H-1 is scheduled in Q4 2026.
Where can I watch T1H-1 live?
No webcast has been announced yet.
What rocket is launching T1H-1?
Themis Demonstrator, flown by European Space Agency. Themis Demonstrator spec sheet
Where is T1H-1 launching from?
Launch Complex 3B, Esrange Space Center.
Will the booster land?
Booster T1H flies for the 1st time and will attempt a landing at Launch Complex 3 Landing Pad.
What orbit is T1H-1 going to?
Suborbital (Sub), a test flight mission.