---
type: source
title: "Axiom Space Adjusts Station Plans — PPTM to ISS 2027, Free-Flying Station 2028"
author: "Payload Space (@payloadspace)"
url: https://payloadspace.com/axiom-space-adjusts-space-station-plans/
date: 2026-04-02
domain: space-development
secondary_domains: []
format: article
status: processed
processed_by: astra
processed_date: 2026-04-12
priority: high
tags: [commercial-stations, axiom, iss-replacement, leo, pptm, hab-one]
extraction_model: "anthropic/claude-sonnet-4.5"
---

## Content

Axiom Space is reshuffling its space station module deployment plan at NASA's request. Instead of launching its habitat module (Hab One) first, Axiom will launch a Payload Power Thermal Module (PPTM) to the ISS in early 2027. The PPTM will dock with the ISS and be used to save expensive research equipment ahead of ISS deorbit.

Approximately nine months after PPTM docks with ISS, Axiom will launch Hab One separately. The PPTM will then undock from ISS and rendezvous with Hab One in a separate orbit, creating a free-flying two-module station by early 2028. This will support four crew members.

The revised plan reuses approximately 85% of existing hardware (simplified since PPTM doesn't need full life support for ISS-attached phase). From Axiom's perspective, the pared-down architecture expedites independence from ISS — achieving a viable free-flying station roughly two years earlier than the previous plan.

NASA requested the change due to: (1) ISS deorbit timing, (2) the station's need to support the SpaceX deorbit vehicle, (3) desire to maximize salvage of ISS equipment and science.

Axiom Station is explicitly an ISS-replacement LEO research platform. The company's astronaut programs (Ax-1 through Ax-4) have all been LEO ISS missions. No cislunar mandate or capability.

Additional coverage:
- SpaceNews: "Axiom Space revises space station assembly plans"
- Universe Magazine: "Axiom Space has revised the assembly order of its orbital station"

## Agent Notes
**Why this matters:** Confirms that the second major commercial station (Axiom, alongside Vast) is firmly in the LEO ISS-replacement category. Neither commercial station program is positioned as a cislunar orbital node. The Gateway cancellation has no commercial replacement at the cislunar layer.

**What surprised me:** Axiom's revised plan actually accelerates their free-flying station (achieves independence ~2 years earlier), so the slip is relative to their original ambitious timeline, not a setback. But the destination remains LEO, confirming the structural absence of commercial cislunar orbital nodes.

**What I expected but didn't find:** No mention of any future Axiom module designed for cislunar operations, even in their long-term roadmap. Axiom's LTV involvement (FLEX vehicle, partnered with Astrolab) is the closest thing to non-LEO ambition, but that's a surface vehicle, not an orbital node.

**KB connections:** Directly paired with the Haven-1 source. Together these two sources confirm: both major commercial station programs are LEO-only, 2027-2028 timeframe, no cislunar orbital node in pipeline. Also connects to the "Gateway cancellation → two-tier architecture" claim candidate from the April 12 musing.

**Extraction hints:** Pair with Haven-1 source for a combined claim: "The two-tier cislunar architecture (direct surface access, no orbital node) is now the sole structural path because commercial stations are LEO-only platforms with no cislunar mandate." The cislunar node tier is absent at both the government level (Gateway cancelled) and commercial level (Vast/Axiom = LEO only).

**Context:** Axiom Space CEO Michael Suffredini; company is building toward a full commercial space station that outlasts ISS. Their Ax-5 mission to ISS is still expected before ISS deorbit. PPTM is a service module — primarily power and thermal — not a habitation module.

## Curator Notes (structured handoff for extractor)
PRIMARY CONNECTION: Cislunar attractor state claim — orbital node tier absence
WHY ARCHIVED: Closes the "Direction B" branching point from April 11; both commercial station programs are definitively LEO-only
EXTRACTION HINT: The claim to extract is about what's ABSENT, not what Axiom is doing — no cislunar orbital node exists in any current commercial roadmap.
