Indian SpaceX Challenger EtherealX Raises $20.5M to Make Rocket Reuse India’s Next Big Export
- From “unipolar” space to a multipolar launch market
- The “aha” moment: reuse the upper stage or lose the economics
- Why TDK Ventures and BIG Capital are writing big checks into deep hardware
- From hot‑fire tests to revenue: crossing the hardware valley of death
- India’s new spacetech archetype: venture‑backed, global, unapologetically deep‑tech
- Bengaluru’s EtherealX has closed an oversubscribed $20.5 million Series A at an $80.5 million valuation to build fully reusable medium‑lift rockets.
- TDK Ventures, BIG Capital and a slate of global VCs are betting India can help loosen SpaceX’s near‑monopoly on access to orbit.
Bengaluru-based spacetech startup EtherealX has raised ₹185 crore (about $20.5 million) in an oversubscribed Series A round, pushing its valuation up 5.5x to $80.5 million and putting India firmly in the race to build what it says will be the world’s first fully reusable medium‑lift rocket.
The round is co-led by TDK Ventures and BIG Capital, with Accel, Prosus, YourNest Venture Capital, BlueHill Capital, Campus Fund and Riceberg Ventures also joining the cap table.
Alongside the capital, EtherealX has secured 150 acres in Andhra Pradesh for a manufacturing and engine‑test campus – a brick‑and‑mortar commitment that signals this is not just a slick deck and pretty renders, but a serious bid to build India’s answer to Hawthorne and Boca Chica.
“When over 83% of global payloads are launched by a single vehicle, that’s not market dominance, it’s market dependence,” founder and CEO Manu J. Nair told The Economic Times.
Nair wants EtherealX to be the company that changes that math.
From “unipolar” space to a multipolar launch market
Founded in 2022 by Nair, Shubhayu Sardar and Prashanth Sharma, EtherealX – formally the Ethereal Exploration Guild – is building Razor Crest Mk‑1, a roughly 35‑meter rocket that aims to do something even Falcon 9 does not: bring both the booster and the upper stage back for reuse.
In practice, that means taking the SpaceX playbook and pushing it a step further. Falcon 9 largely reuses its first stage and expends the upper stage. EtherealX wants the entire stack back. If it can pull that off, the company is targeting launch prices in the $500 to $1,000 per‑kilogram range to orbit in its baseline plans, and in some configurations, over time, as low as $350/kg.
Pricing at that level would take a meaningful bite out of the stubborn cost of getting mass to orbit, especially for constellation operators and national space agencies outside the United States that today rely heavily on SpaceX.
Nair’s thesis is as geopolitical as it is technical. Today, he argues, the orbital launch market is effectively “unipolar,” with SpaceX carrying more than four‑fifths of global payloads.
“We see an opportunity to make it multipolar. India is perfectly positioned for that, geographically and technologically,” he said.
If SpaceX is the default platform, EtherealX wants to be the clear second option for medium‑lift launches – especially for customers who like SpaceX’s prices but are uneasy about depending so heavily on a single provider.
The “aha” moment: reuse the upper stage or lose the economics
For years, most launch startups have focused on cheaper boosters, new manufacturing techniques and 3D‑printed engines. Very few have seriously tried to reuse the upper stage, often treating it as a technical rabbit hole that can wait for later.
EtherealX decided that assumption was backwards. Its team concluded that without a reusable upper stage, the economics of medium‑lift launch would hit a hard ceiling long before reaching the $500/kg price band that next‑generation applications are going to demand.
That insight pushed the company toward a tough technical choice: build Pegasus, an 80 kN reusable upper‑stage engine, around a proprietary Full Flow Segregated Cooling Cycle (FFSCC) – a feed system designed to squeeze higher performance and durability out of each engine. EtherealX says Pegasus has already been manufactured and paired with an additively manufactured turbopump, a milestone the company claims to have reached in under three and a half years from founding.
On the booster side, Stallion, a 1.2 MN gas‑generator‑cycle engine, is designed to fly in a nine‑engine cluster on Razor Crest Mk‑1’s first stage. The upper stage will use 15 Pegasus engines, all developed in‑house.
When flown as a fully expendable vehicle, Razor Crest Mk‑1 is designed to lift up to 24.8 tonnes to low Earth orbit and 10.8 tonnes to geostationary transfer orbit. With both stages recovered and reused, the rocket targets around eight tonnes to LEO – still serious capacity for constellation deployments and national security missions.
Why TDK Ventures and BIG Capital are writing big checks into deep hardware
Series A rounds in deep‑tech are rarely this crowded. EtherealX’s raise brings together strategic and financial investors that more often meet in later‑stage deals.
TDK Ventures is participating not just with capital – up to $5 million of the round – but also with components and engineering support from its parent, TDK Corporation, in areas such as sensing, high‑reliability passive components and power‑delivery systems.
In a note announcing the investment, TDK framed the deal as a way to help “pioneer rocket cargo and the future of reusable medium‑lift space launches,” positioning Razor Crest Mk‑1 as a platform that can eventually support point‑to‑point logistics on Earth as well as traditional satellite missions.
For TDK, access to EtherealX’s avionics and launch architectures is valuable R&D. For EtherealX, it helps de‑risk some of the most failure‑sensitive parts of the rocket stack.
BIG Capital is returning after backing the company’s seed round, which it led alongside YourNest, BlueHill and Campus Fund in August 2024. That earlier round brought in $5 million at an implied $14.6 million valuation.
In effect, BIG is now marking up its own bet by more than 5x in roughly a year and a half – a strong signal to the rest of the market that the firm believes EtherealX has cleared key technical proof points.
Accel and Prosus joining the cap table add another layer of validation. Their presence telegraphs that this is not a niche science experiment, but a venture‑scale attempt to build a defensible position in a capital‑intensive, potentially winner‑takes‑most corner of the launch market.
From hot‑fire tests to revenue: crossing the hardware valley of death
Series A capital in spacetech usually buys time – a few years to turn CAD drawings and subscale rigs into hardware that can survive the violence of launch. EtherealX has laid out a fairly specific roadmap for what it plans to achieve with this round.
The new funding will go toward:
- Hot‑fire qualification of the Pegasus and Stallion engines, targeted for mid‑2026.
- A 35‑meter technology demonstrator flight in 2027, focused on gathering data rather than carrying paying payloads.
- Development of recovery and reuse systems for both booster and upper stage.
- Standing up the 150‑acre Andhra Pradesh campus, which is slated to be operational by mid‑2026 for clustered engine and stage tests.
If the team executes on that plan, EtherealX is aiming for the first full‑scale Razor Crest Mk‑1 launch by late 2028, with an initial cadence of five to six launches a year and a gradual ramp from there.
That timeline still leaves the classic “hardware valley of death” question hanging over the company: can a $20.5 million Series A, plus the earlier seed, really carry a medium‑lift rocket all the way to orbit?
EtherealX is trying to narrow that gap with something many launch startups at a similar stage do not yet have – customers already pencilled in.
The company has signed memoranda of understanding and launch agreements worth around $130 million with roughly half a dozen customers, including Japan’s SpaceBD and Taiwan’s TASA, covering missions from 2028 onward.
Those contracts will only turn into revenue once rockets are flying, but they provide a visible demand pipeline and a useful lever when the company goes back to the market for future funding.
India’s new spacetech archetype: venture‑backed, global, unapologetically deep‑tech
EtherealX is part of a new generation of Indian spacetech companies – alongside names like Skyroot Aerospace and Agnikul Cosmos – that are moving beyond component work and small launchers to build full‑stack, globally competitive platforms.
The startup has already signed collaboration agreements with IN‑SPACe, ISRO and other international space agencies, giving it access to test facilities, regulatory support and potential mission partners.
Unlike India’s first wave of space contractors, EtherealX is venture‑backed from day one and speaking openly about “rocket cargo as a service” and reshaping a unipolar launch market. Its founding team brings experience from ISRO, Manastu Space and international aerospace programs, combining institutional depth with startup pace.
If they can turn that mix into reliable, repeatable reuse, Razor Crest Mk‑1 would be more than just another rocket on a crowded launch chart. It would be a proof point that India can export extremely complex frontier hardware at scale, not just software and IT services.
For now, the scoreboard is straightforward: $25.5 million raised so far, a 5.5x jump in valuation, 150 acres of test and manufacturing land locked in, two engines built, and an ambitious three‑year march to first commercial flight.
If EtherealX hits those milestones, it won’t just offer satellite operators another ride to orbit. It could mark the moment the center of gravity in reusable rocketry shifts, even if slightly at first, toward Bengaluru.