Helios is made by Impulse Space, based in Redondo Beach, California, USA, founded in 2021.

Where is Helios deployed?

1 verified deployment of Helios is on the DEPLOY registry, including at Geostationary Orbit (GEO).

What is Helios's maturity stage?

Helios is at the pilot stage on the DEPLOY maturity ladder (research, prototype, pilot, commercial, production). Pilot stage means at least one named-customer trial deployment is verified.

Robot model

Helios

Name: Helios
Brand: Impulse Space

High-energy kick stage designed for direct GEO insertion from LEO. 3.5 m diameter. Primary engine: Deneb (67 kN LOX/methane, ox-rich staged combustion, 380+ s Isp). Payload capacity ~4,000 kg. First flight targeted 2026 (Falcon 9, with two Mira vehicles). First commercial customer: SES (multi-launch agreement, first mission 2027).

Helios is a space robot built by Impulse Space. · Documented in 1 deployment in Geostationary Orbit (GEO).

Track Helios

Machine-readable surfaces

Markdown mirror: /models/helios.md
JSON-LD: embedded in this page’s head
REST API: /v1/models/29eaa53c-0c80-4c11-bc35-5adf73c33116
Revision history: /models/helios/history
Data documentation: /data
Query this programmatically: Deploy MCP

Form factor: space
Maturity stage: pilot
Lifecycle: active
Deployments: 1
ID: 29eaa53c-0c80-4c11-bc35-5adf73c33116

Deploy Watch

Track Helios on Deploy.

We notify you when pricing, deployment status, or regulatory state changes against primary-source evidence, not when the maker issues claims.

Specs

role: high-energy kick stage
payload: ~4,000 kg to GEO
autonomy: autonomous multi-burn GTO-to-GEO transfer
diameter: 3.5 m
propulsion: Deneb (67 kN, LOX/methane, staged combustion)

Recent deployments (1)

Helios at Geostationary Orbit (GEO)Geostationary Orbit (GEO)

Sources (1)

https://www.ses.com/press-release/ses-signs-multi-launch-agreement-helios-transport-services-impulse-space

Common questions

What is Helios?: High-energy kick stage designed for direct GEO insertion from LEO. 3.5 m diameter. Primary engine: Deneb (67 kN LOX/methane, ox-rich staged combustion, 380+ s Isp). Payload capacity ~4,000 kg. First flight targeted 2026 (Falcon 9, with two Mira vehicles). First commercial customer: SES (multi-launch agreement, first mission 2027).
Who makes Helios?: Helios is made by Impulse Space, based in Redondo Beach, California, USA, founded in 2021.
Where is Helios deployed?: 1 verified deployment of Helios is on the DEPLOY registry, including at Geostationary Orbit (GEO).
What is Helios's maturity stage?: Helios is at the pilot stage on the DEPLOY maturity ladder (research, prototype, pilot, commercial, production). Pilot stage means at least one named-customer trial deployment is verified.

Methodology: Verified · 1 source (no primary) · last reviewed 2026-06-07

Verification posture

Verified

Low confidence

Review state

Stable

Last reviewed 2026-06-07

Maturity + lifecycle

Maturity stage: pilot

Lifecycle: active

Architectural position

Cohort: space

Sources by quality tier

1: unclassified; Unclassified source

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.