$450 million. That is what The Exploration Company raised on September 8: the largest Series C ever booked by a European space company, and roughly half again the sum it was reported to be seeking in July.
Most of the money funds the Storm engine rather than the Nyx capsule, and Storm would power a European heavy-lift launcher that Europe has not yet decided to build.
The vehicle remains unproven. Two subscale flights ended in mixed results, the full-scale capsule has never completed a return, and its first mission to the International Space Station (ISS) is scheduled for 2028.
The company was founded in 2021 by Hélène Huby, a two-decade Airbus and ArianeGroup veteran. It builds two machines: Nyx, a reusable capsule that docks with a space station and carries cargo back to Earth, and Storm, a methane-fuelled engine for a European heavy-lift launcher that has not been approved.
The Exploration Company Series C
Co-led by Bessemer Venture Partners, Atomico and the EU's Scaleup Europe Fund, bringing total funding to about $680 million. · TechCrunch, 2026
The capsule has the customers. The engine has the cash.
Huby has said most of the new money is earmarked for Storm, not for the capsule that gave the company its name. The engine has been in development for three years. Tests are scheduled to begin late in 2026 and run into 2028. At full scale it would be the largest liquid-oxygen and biomethane engine built in Europe.
The bet is awkward. Europe has not committed to building the launcher Storm would power. The engine is being capitalised against a vehicle that exists in none of the current funding plans for European heavy lift.
That is the trade.
Nyx is the part with customers. The company says it holds about $2 billion in contracts and commitments from public and private buyers, including a Space Act Agreement with the National Aeronautics and Space Administration (NASA), the first won by a European space startup, and ten missions on the books. It has also spent the past year buying execution: European Astrotech in June, a Houston innovation lab and a US federal arm in July.
Nyx is designed to dock with a station, take on up to 3,000 kilograms of cargo, and return it to a splashdown. Ten flights per capsule is the target. The company says no flying vehicle matches that down-mass.
What does the Series C actually fund?
Nyx: a reusable capsule that returns up to 3,000 kilograms from low Earth orbit (LEO), reflyable up to ten times, compatible with any heavy launcher, with a carbon-based heat shield. First ISS mission planned for 2028.
The round: co-led by Bessemer Venture Partners, Atomico and the EU's Scaleup Europe Fund, with Balderton, Plural, Cherry Ventures and Red River West. Total raised to date: about $680 million.
This is more than a contract award: it reflects a shift in how we build space technology in Europe.— Hélène Huby, founder and CEO, The Exploration Company
The missing leg is down-mass
Launch is close to a commodity. Returning is not.
The demand is coming from biology. Varda Space Industries, a California company, has flown six reentry capsules since 2024, growing drug crystals in microgravity and bringing them home. Its sixth mission, in March, carried government experiments for hypersonic-flight research, the same heat shield serving two very different customers.
Atmos Space Cargo, a German competitor, raised about $30 million in April for its Phoenix capsule, aimed at life-sciences samples, with demonstration flights planned for this year.
Three serious players now chase a market that barely existed three years ago. Honest estimates of its size are guesses.
| Vehicle | Primary cargo | Reusable | Status |
|---|---|---|---|
| Nyx (The Exploration Company) | Station cargo, up to 3,000 kg down | up to 10 flights | First ISS mission planned 2028 |
| Varda W-Series | Microgravity pharmaceuticals | no | Six reentry missions by March 2026 |
| Atmos Phoenix | Life-sciences samples | no | Demonstration flights planned 2026 |
The economics turn on reuse. A capsule that flies once is a delivery service; a capsule that flies ten times is a logistics business. Nyx is designed for ten. That number, more than the down-mass figure, is what the $450 million is meant to buy.
A second customer hides inside the first. Reentry capsules double as hypersonic testbeds, and Western defence agencies are short of ways to fly instruments at those speeds. Varda's March mission was exactly that. The commercial and the government uses share a heat shield, which halves the cost of each.
The public side moved on September 10, when ESA signed a service contract with The Exploration Company for the next phase of its cargo-return programme, now branded ALADDIN. The contract covers completion of the full system and an in-orbit demonstration. The agency pays the majority of the cost, with the company carrying the rest.
What Europe is underwriting
The engineering record is thin.
The company has flown two subscale demonstrations of Nyx. The second, in June 2025, survived reentry but lost contact before splashdown when its parachutes failed to deploy. The company said the earlier phases performed as expected. The full-scale capsule has not completed a return.
As we wrote in September, Stoke Space raised $1 billion for a rocket that had not yet flown. Financial markets have decided to fund the hardware before it works. Europe is following the American script.
Huby frames ALADDIN as a first: a five-year-old European startup winning a contract worth hundreds of millions of euros in open competition. The competition is not only European. SpaceX's Dragon returns cargo today, and Stoke, Varda and a handful of others are building the same thesis from the American side.
The capital markets have already voted on the category. Four months before the round, Varda was flying government hypersonic experiments; four days after it, Stoke closed its own billion. Whatever the return market becomes, global capital will set the price.
The 2028 ISS mission: the first full-scale Nyx return attempt, and the real test.
Storm hot-fire results from late 2026: a clean test anchors a European heavy-lift programme, a slip strands the capital.
ALADDIN milestone payments: public money now follows technical gates, so progress becomes measurable.
Down-mass pricing: what a kilogram of returned cargo costs once three vendors compete rather than one.
Can a capsule pay for a rocket engine?
Probability: 55%. Three years of development sit behind the engine and a funded test campaign lies ahead, but the launcher it serves has no approval, which caps how far the programme travels on private money alone.
✅ Arguments for
The EU's Scaleup Europe Fund and Bessemer and Atomico bring patient capital with a policy mandate.
Europe's appetite for sovereign access to space is at a multi-year high.
Confirmation criteria: published hot-fire test data by late 2027 and a launcher decision at the next ESA ministerial.
❌ Arguments against
Storm's launcher has no funding line, so the engine can outrun its own market.
SpaceX's Dragon and US reentry startups set the price for returned cargo.
Disconfirmation criteria: a Storm test slip, or ESA delaying ALADDIN milestone payments.
Development scenarios
🟢 Optimistic scenario (30%)
Implications: TEC becomes the anchor of European return logistics and hard to replace.
🟡 Base-case scenario (50%)
Implications: a viable but sub-scale business, dependent on anchor tenancy and the next funding round.
🔴 Pessimistic scenario (20%)
Implications: consolidation rather than independence, with the return market owned from outside Europe.