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Atomos Space

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Atomos Space is developing high-powered electric propulsion spacecraft to provide in-space transportation services to satellite operators

Denver, United StatesFounded 2018Space
Valuation $50–100M Last recorded · 2023
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
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About Atomos Space

Atomos Space, founded in 2017 by Vanessa Clark and William Kowalski, is a company focused on in-space logistics, specifically developing and operating orbital transfer vehicles (OTVs) to provide "last-mile" transportation for satellites. The firm addresses the challenge satellite operators face when relying on rideshare launches, which typically deliver payloads to a standard, non-prejudicial orbit that may not be the final desired destination. Atomos's service model involves its OTVs rendezvousing with and capturing client satellites in a provisional orbit and then transporting them to their precise operational orbit, a service that can potentially halve launch costs for customers deploying constellations.

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The company's founding was driven by CEO Vanessa Clark's direct experience as an aerospace engineer, where she observed the interdependent limitations between launch vehicle and satellite design. Clark's extensive background includes work on spacecraft propulsion and space nuclear power systems at institutions like the German Aerospace Centre (DLR), Airbus, and Lockheed Martin. Co-founder and COO William Kowalski brings a complementary skill set with a background in finance and a passion for physics and space policy. Their combined expertise addresses both the technical and the complex regulatory and financial hurdles of the space industry.

Atomos's core technology is embodied in its reusable, space-resident OTVs, which contrasts with single-use kick-stages. This reusability is central to its business model, aiming to amortize costs over many missions. The company is developing a line of vehicles, including the "Quark," a versatile OTV combining autonomous rendezvous and capture technology with high-thrust electric propulsion. For its initial demonstration mission, named "The Singing Astronomer," Atomos launched its Quark OTV and a target vehicle called "Gluon" in early 2024 to test rendezvous, docking, refueling, and orbital transfer capabilities. Atomos is also pursuing advanced propulsion technologies, including nuclear systems, to enable more ambitious missions in the future, such as transport to geosynchronous orbit (GEO) and deep space.

Financially, Atomos Space has secured significant backing, raising a total of $23.4 million over four funding rounds. A notable Series A round in January 2023, co-led by Cantos Ventures and Yamauchi-No. 10 Family Office, raised $16.2 million. The company has also won over $2 million in contracts from government bodies like NASA, the US Air Force, and the US Space Force. Operating from a 20,000-square-foot facility in Broomfield, Colorado, Atomos has vertically integrated its manufacturing and testing, including a unique Rendezvous and Proximity Operations (RPO) testbed called "The Void". In April 2025, it was announced that Atomos was acquired by Katalyst Space Technologies, a move intended to combine Atomos's OTV and rendezvous capabilities with Katalyst's focus on in-space servicing and satellite upgrades.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2018
Headquarters
Denver, United States
Employees
3
Open positions
None listed
Dealroom signal
65.0/100
Sector
Space, Aerospace, Space Travel, Nuclear, Spinout, Logistics, Space Tech, Space Transportation, In-Space Transportation, Space Vehicles Components and Payloads, Propulsion Systems, Space Upstream
Technology
Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

7 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITION✓Exit Apr 2025 $0 — Katalyst Space Technologies ↗
LATE VC✓Equity / VC Jan 2023 $16M $65M Undisclosed ↗
Showing the latest 2 of 7 recorded eventsBook a demo for the full funding history →

Growth signals

Atomos Space website traffic

Latest recorded traffic for Atomos Space is 200 monthly website visits, down 69.7% over the last three months. Atomos Space's team grew 50% over the past year.

Latest monthly visits200 3-month web change-69.7% 1-year team growth+50%
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Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

18 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A8 investors entered at this stage

  • Upheaval Investments
  • Techstars
  • XFactor Ventures
  • GAN Ventures
  • Cantos Ventures
  • Pure Ventures
  • Morgan Brook Capital
  • Urania Ventures

Other known investors10 additional known investors

  • Katalyst Space Technologies
  • University of Toronto
  • Catalyst Accelerator
  • Creative Destruction Lab
  • FI Core Accelerator
  • Founder Institute
  • Founder Institute Texas
  • Revolution
  • Riyadh Techstars Accelerator
  • Small Business Innovation Research
Team profiled 3 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Atomos Space on X, ranked by likes and reposts, corporate channels excluded.

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Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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