# Reditus Space

> Reditus Space is an Atlanta-based aerospace startup building reusable spacecraft that carry payloads to low Earth orbit and return them safely to the ground. Its first vehicle, ENOS, is a free-flying reentry capsule designed to host commercial and research payloads for roughly two months in microgravity before splashing down for recovery and reuse. Founded in 2024 by Georgia Tech aerospace engineers Stef Crum and Will Sherman, the company sells 'microgravity as a service' and routine 'downmass' - the return of materials from orbit - to pharmaceutical, semiconductor, biotech, and defense customers.

- **Founded:** 2024
- **Headquarters:** Atlanta, Georgia, United States
- **Founders:** Stef Crum (CEO & Co-Founder), Will Sherman (CTO & Co-Founder)
- **Team size:** ~12-16 employees
- **Products:** ENOS (Mk-0), Microgravity as a Service, Downmass / Payload Return, Hypersonic Testing Platform
- **Notable:** Completed its first full-scale reusable reentry vehicle, ENOS, in July 2026 - roughly a year after founding., Closed a $7.1M seed round backed by Y Combinator, Antler, and Aera., Graduated from Y Combinator's Winter 2025 batch.

## Products & services

- **ENOS (Mk-0)** — A reusable free-flying reentry spacecraft. About 200 kg fully loaded with a 40 kg return-capable payload (targeting 60 kg on later iterations), it deploys to low Earth orbit, hosts payloads for roughly two months, then reenters at up to Mach 29 and splashes down for recovery and reuse.
- **Microgravity as a Service** — Scalable, high-frequency round-trip access to orbit for materials processing and research - controlled crystal growth, drug formulation, optical materials, and semiconductor manufacturing that benefit from zero gravity.
- **Downmass / Payload Return** — Routine return of cargo and manufactured goods from orbit to Earth, filling the gap left by retiring platforms and limited return capacity.
- **Hypersonic Testing Platform** — The high-speed reentry environment of ENOS doubles as a testbed for hypersonic technology development for commercial and defense applications.

## Achievements

- Completed its first full-scale reusable reentry vehicle, ENOS, in July 2026 - roughly a year after founding.
- Closed a $7.1M seed round backed by Y Combinator, Antler, and Aera.
- Graduated from Y Combinator's Winter 2025 batch.
- Assembled a team from SpaceX, Blue Origin, JPL, NASA, and the Department of Defense.
- Shipped ENOS to Vandenberg Space Force Base for a Fall 2026 SpaceX launch.

## Latest updates

- **2026-07** — Completed and shipped the ENOS reentry vehicle to Vandenberg Space Force Base ahead of its first flight.
- **2026-07** — Selected PTC's Onshape CAD platform to accelerate reentry capsule development.
- **2026-07** — Announced ENOS mission plans; first flight targeted for Fall 2026 on a SpaceX rideshare, recovery off Florida by December 2026.
- **2025-03** — Closed a $7.1M seed round after the Y Combinator W25 batch.

## Links

- Website: https://reditus.space
- LinkedIn: https://www.linkedin.com/company/reditus-space
- Twitter/X: https://x.com/ReditusSpace

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Profile page: https://yespress.io/reditus-space-yc-w25
Published by YesPress — https://yespress.io
Last updated: 2026-07-30