Cascade Space
YC X25San Francisco, US · Founded 2025 · 7 employees · Hiring · 10 known investors
Cascade Space develops software tools and infrastructure for designing, building, testing, and operating spacecraft communication systems. The company serves aerospace and space companies seeking to accelerate development with reduced team requirements.
Also known as Heliosphere Network Corporation · Cascade · Heliosphere Network
Founders & leadership· Y Combinator alumni (X25)
Cascade Space was founded in 2025 by Jacob Portukalian and Arlen Abraham.
Investors · 10
Also in the syndicate · 5
Funding
SEC filings, press & company announcements$5.9M disclosed across 1 of 3 rounds · 2025–2026
- $5.9MseedJun 2026 · 2 sources
Aurelia Foundry, Garage Capital, Hawktail, Karman Ventures, Liquid 2 Ventures, MGV.VC, Night Capital, Nova Threshold, Olive Capital, Palm Drive Capital, Pioneer Fund, TRAC, Undeterred Capital, Valkyrie Ventures, Y Combinator
Source ↗ - Undisclosed amountSeedJul 2025 · 2 sourcesSource ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026Cascade Space is a space communication systems company founded in 2025 and based in San Francisco. It develops tools and infrastructure for designing, building, testing and operating spacecraft communication systems, positioning itself as a commercial alternative to NASA's Deep Space Network, which the company describes as oversubscribed and unavailable for commercial missions. Its stated goal is to let customers ship faster with smaller teams.
The company has two main product lines. Cascade Designer is a browser-based tool for link budget design and simulation, with a drag-and-drop editor, a library of generic RF components and a catalog of commercially available parts from suppliers such as Plane Wave and Orbital Systems, support for vendor-supplied or user-uploaded 3D antenna patterns, CCSDS demodulator blocks computing C/N0, Eb/N0 and margin, team sharing with read-only or edit access, and an API for batch analysis of full mission trajectories from a trajectory CSV. Designer is built on spacelink, the company's open-source Python library for space communications modeling. The second line, Cascade Array, is ground infrastructure: rather than single large dishes, the company plans arrays of smaller dishes, which it argues are cheaper to build, more reliable and offer dynamic aperture size and pricing with build costs that fall over time.
On the infrastructure roadmap, the company states that its first ground station, Earth Station Zero, will be online and downlinking data from the Moon in 2026, with plans to scale to a global network by 2028; its website also advertises new capacity coming online in 2027.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Founder mafia
2 people who came through Cascade Space went on to found or lead other companies.
Timeline · 4
launches, deals, and filingsCascade Space announced a $5.9 million seed round to build an end-to-end platform for space communication system design, test and operation, with funding directed at development of the Cascade Portal. Participants included Nova Threshold, Undeterred Capital, Y Combinator, Night Capital, Olive Capital, Valkyrie Ventures, Karman Ventures, Palm Drive Capital, Garage Capital, TRAC, Aurelia Foundry, Hawktail, MGV.VC, Pioneer Fund and Liquid 2 Ventures.
$5.9M source ↗
Cascade Space is listed as an active company in Y Combinator's Spring 2025 batch, with Tom Blomfield as primary partner.
Cascade Space launched Cascade Designer, spacecraft communication system design software with a graphical editor, link margin calculation, trajectory analysis via API and team sharing.
Cascade Space released spacelink, an open-source Python library for link budget and communication system analysis, which underpins the Cascade Portal/Designer implementation.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 8
primary sources listed
- Cascade Spacecascadespace.com · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Cascade Space do?
- Cascade Space builds design software and a deep space ground station network for spacecraft communication systems.
- Who founded Cascade Space?
- Cascade Space was founded by Jacob Portukalian, Arlen Abraham in 2025.
- Who are Cascade Space's investors?
- Cascade Space's investors include HAWKTAIL, TRAC (Third Round Analytics Capital), Y Combinator, Night Capital, Undeterred Capital.
- How much funding has Cascade Space raised?
- Cascade Space has disclosed $5.9M raised across 1 of its 3 known rounds.
- Where is Cascade Space headquartered?
- Cascade Space is headquartered in San Francisco, US.


