Mass Effect: Andromeda Wiki
Orbital distance 1.3 AU
Orbital period 1.6 years
Radius 2952 km
Atmospheric pressure 1.98 atmospheres
Surface temperature 19 C
Available minerals Vanadium Icon.png Vanadium
Iron Icon.png Iron
Graphite Icon.png Graphite
Aluminum Icon.png Aluminum
A desert world with significant resources, Eos is often wracked by deadly, radiation-contaminated storms. Catalogued as nonviable after numerous attempts to settle.

Eos, also known as Habitat 1, is a planet in the Pytheas star system.



The following missions take place or are acquired on Eos:

Priority Ops
Allies and Relationships
Heleus Assignments
Additional Tasks

Research Opportunities[]

Research Data (RD) opportunities on Eos are found on specific mission and location pages. Some items are cleverly hidden and not associated with missions or high traffic areas. These are known as orphan RD items. For a complete list of all orphan research data items, see Research Data Orphans.


The following audio and text logs can be found throughout Eos:


Terminal entries[]

Forward station terminal entries[]

Architect Husk: Eos[]

Pytheas - Eos - Architect Husk Eos.png

An anomaly is detected on this planet after Making An Impression. Scanning reveals an Architect Husk: Eos.


  • Classification: Enemy (decommissioned)
  • Origin: Andromeda (Eos)


This Remnant Architect's programming directives have been interrupted. It is in an orbital standby mode and remains tethered to its home planet Eos. The Architect's systems are completing recovery from severe radiation exposure. The Architect itself appears to be conducting monitoring and analysis of Eos' atmosphere.



Codex Card Eos.png

Eos, designated Habitat 1, was the earliest "golden world" identified for outpost placement. Named for the Greek goddess of dawn by Jien Garson personally, Eos embodied the hope of the Andromeda Initiative for a new start.

On arrival, the Nexus discovered that a world projected to be arid but comfortably habitable was now ravaged by radioactive fallout from the Scourge. The planet's atmosphere is wracked by storms that have spread the radiation across continents; periodic 130km/hr winds strip equipment and damage shuttles.

Reports from the Nexus include a sanitized account of two attempts to colonized the planet, both of which ended in failure and an unacceptable loss of life. There is also a significant kett presence on Eos, apparently investigating mysterious signals on the surface. Eos is now off-limits to unauthorized Nexus personnel, as the Nexus leadership believe it is no longer viable.

Activating the vault discovered below Eos' surface has had a dramatic and immediate effect. Radioactive particles are being stripped from the atmosphere by unknown means, and the resulting temperature changes are calming Eos' high winds. The planet's moisture levels are already showing improvement.

Prodromos, the first Pathfinder-established outpost has been founded in Fairwinds Basin, with Mayor August Bradley in charge. The Nexus is broadcasting footage of departing colonists and the new conditions on Eos across all communication channels.

Environmental Information[]

Eos is heavily contaminated by lethal levels of radiation prior to activation of the planet's vault. All areas outside of specially shielded zones will cause Radiation Hazard Icon.png RADIATION damage and pose an environmental hazard to personnel and vehicles.

  • Hazard Level 1 - RADIATION 0.041 mSv/hr
  • Hazard Level 3 - RADIATION 55.765 mSv/hr


On all planets with forward stations, forward stations will drop when approached. Eos is a special case in that most of the map is inaccessible until the radiation has cleared. A few forward stations will be available to drop right away but the remaining ones will only drop after the radiation has cleared.