Home | Hstar Space

Building Europe’s Next-Generation Reusable, Very Heavy-Lift Launcher

Making Space a Catalyst for Earth’s Global Decarbonization

Our Purpose

We exist to build a future where space directly serves Earth, powering clean energy, securing data, and a carbon-free economy.

Our company positions itself as the lead designer of Europe’s next-generation very heavy launchers.

Hstar Space is a French aerospace company developing a large-scale, reusable launch vehicle through an innovative hybrid economic model inspired by industry leaders best practices, to combine technical excellence, industrial resilience, and market adaptability.

Our ambition is to make Europe the global leader in sustainable and intelligent launch systems by building the most inspiring space ecosystem for future generations — where every euro invested drives both Earth’s decarbonization and the responsible expansion of humanity into space.

To pioneer the development of a European very-heavy, fully reusable space transportation system, leading system integration while orchestrating a horizontal European supply chain that leverages both industrial champions and NewSpace innovators for large-scale production and sustainable deployment. Leveraging a user-centric co-design approach, we tap into vertical markets like energy and data to secure demand and drive long term profitability.

Our Mission

Image: Solaris, A.D. Little

SOLAR REFLECTIVE POWER

Harnessing space-based solar power could unlock clean, continuous energy at planetary scale, reducing the strain on Earth and meeting the demands many times over.

Image: ASCEND, Thales Alenia Space

IN-ORBIT DATA CENTER

Relocating data centers to space reduces terrestrial energy strain (energy, potable water, etc.) while meeting the surging compute demand of AI and cloud infrastructure.

HEAVY INFRASTRUCTURE & CONSTELLATIONS

Next-generation orbital infrastructure, including mega-constellations and large-scale platforms, will support critical services from Earth observation to energy, logistics, and climate resilience.

STAGE 02
Reusable/Expendable
LOX/LH2

STAGE 01
Reusable
LOX/CH4

Our Value Proposition

We provide the most European scalable, modular, and economically optimized launch and return service — designed from the ground up for deploying next-generation orbital infrastructure and supporting high-frequency constellation missions. With a fully reusable configuration (up to 40 tons) and a semi-reusable heavy-lift version (up to 95 tons), we deliver unmatched performance, flexibility, and sustainability for public and commercial space stakeholders, worldwide.

PERFORMANCE IN LOW EARTH ORBIT

PERFORMANCE IN MODULARITY

PERFORMANCE IN LAUNCHER REUSE

40 tons

Fully Reusable

95 Tons

Expendable

1000m3

Cargo & Crew

in 2033

25x

in 2040

MODULAR APPROACH AT PLATFORM LEVEL

Big Infrastructure

Mega Constellation & Satellites Rideshare

Cargo & Crew to Space Station

MULTIPLE LAUNCH PAD ACCESS

French Guiana

Kourou European Spaceport

United States

Virginia Spaceport

Australia

Space Centre Australia

Our Foundation

At Hstar Space, our mission to build Europe’s next-generation reusable very heavy-lift launch system is anchored in five core values. These are not just guiding principles; they are embedded into the way we design, operate, and lead in the global space economy.

COLLECTIVE AMBITION

Unifying Europe around a strategic flagship for space sovereignty and climate action.

At Hstar Space, collective ambition is more than a value, it is a structural strategy to align Europe’s industrial, political, and scientific communities around a common purpose. We integrate the strengths of all European member states, leveraging public-private co-investment, shared infrastructure, and distributed innovation. This collective momentum drives the creation of a sovereign, inclusive, and globally competitive space capability, in service of both planetary and technological goals.

COLLABORATION

Turning complexity into coordination — across borders, sectors, and missions — accelerated by market need.

New ways of collaboration is the operating system of Hstar Space. We foster deep, trust-based, agnostic partnerships with industrial leaders, NewSpace innovators, public agencies, and research bodies. By integrating contributions across the entire value chain, from R&D to operations, we accelerate execution, reduce risk, and co-create scalable, high-impact solutions. Together, we go faster, further, and with greater purpose.

EUROPEAN & OPEN

Rooted in Europe. Designed for the world.

Hstar Space is proudly European and strategically open. Our platform brings together the full diversity of UE & ESA nations and allied partners like Canada, Australia, and Japan. We are a hub for cross-border industrial collaboration, open innovation, and global partnerships. By building launch systems open to diverse missions, operators, and use cases, we turn Europe’s diversity into global strength, and accelerate access to critical services like energy, connectivity, and climate resilience.

FLEXIBLITY BY DESIGN

Adaptable by design — to serve a fast-changing world

Hstar Space is engineered for agility. Our modular launcher configurations (from 40 to 95 tons), horizontally integrated supply chain, and PPP-based business model allow us to respond to evolving market needs quickly and efficiently. We match mission diversity with configuration flexibility, and geopolitical uncertainty with multi-site operational resilience. This is how we stay fast, customer-centric, and future-proof.

SUSTAINABILITY

Earth-first innovation, built into every launch

Sustainability at Hstar Space is systemic. We lead with a green-by-design approach, using LOx/Biomethane and LOx/Hydrogen propulsion, embedding full reusability, and offering incentives for eco friendly supply chain practices. We prioritize climate-focused missions through reduced pricing and have established an Environmental Expert Committee to ensure end-to-end impact tracking. Sustainability is not just a feature, it’s our long-term strategy to align space access with the future of our planet.

Get in Touch

hello@hstarspace.com

Toulouse - Paris, France