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Aegis VII during the events of Dead Space.

Aegis VII was a remote planet of key importance, housing the man-made Red Marker, Marker 3A, as well as a gargantuan Necromorph called the Hive Mind.


The seventh planet of the Cygnus system and like-named cluster,[note 1] Aegis VII is located an unknown distance from Earth; although it has been described to be "several million light years from home" by a surveyor. Aegis VII has an unusually large quantity of precious metals residing under its planetary crust.[1][note 2] It was also the resting place of Marker 3A.


Aegis VII appeared to be a rocky planet, similar to Earth, with a molten core. The planet had an orange-tinted sky with an atmosphere that didn't appear to be too thick. Stars and the sparse ring of rocks which surrounded the planet were visible even during the day. The terrain was mountainous and barren. Ravines and caves were common across the surface as well as smooth barren plains requiring a crawler or a shuttle to be traversed quickly.

Because the planet's atmosphere was so thin, wearing an engineer RIG was advised whilst exposed to the surface conditions. Surface weather consisted of high winds and dust storms, making prolonged periods of outside work inadvisable without sufficient protection. However, the atmosphere did contain significant levels of oxygen for a human to breathe.

After Isaac Clarke returned Marker 3A to its pedestal on the planet's surface, it activated an EMP strike. This disabled the gravity tethers which had been suspending a gigantic chunk of rock and earth excavated from the planet, which then fell from low-orbit causing a massive planetary collision and leaving the planet seismically unstable. The molten core of the planet rose up to the surface which created large lakes and rivers of magma covering the surface. With the gravity field of the planet weakened due to this massive collision, it exploded into millions of chunks of debris and asteroids due to a total collapse of the planet's structure.[2]


First Aegis VII Incident[]

After the Black Marker was successfully reverse-engineered by the Sovereign Colonies in the 2290s, one of the copies, Marker 3A, was relocated to Aegis VII, where the research team continued to attempt to decipher the symbols on its surface and study its signal. A number of experiments based on the finally deciphered symbols led to the synthesis of an alien microbial life-form composed of recombinant DNA, resulting in the creation of Necromorph tissue.[3]

Meanwhile, the science team on the distant planet of Aspera, which also held a Marker test site, began to notice that the signal transmitted by the Aegis VII Marker was converging with the signals from the other Red Marker copies and pointing to a prisoner named Istvan Sato who lived in the Aspera penal colony. Determining that this "network" of Red Markers wanted Istvan to be brought near them, the scientists took him to the Aspera Marker where they discovered that his brain acted as a "catalyst" by strengthening the Red Markers' signal and eventually triggering a Necromorph outbreak on all planets' test sites.[4]

After the Aegis VII science team was killed due to the Necromorph infection, the system was erased and abandoned, and the Aegis Cluster marked off limits to all space traffic as a prohibited zone by General of the Army Ambrose Caiden of the Sovereign Colonies Council.[5]

Second Aegis VII Incident[]

Concept art of the Pedestal Chamber where Marker 3A was located.

The planet eventually became home to an illegal mining facility set up by the Concordance Extraction Corporation. With the discovery of the Red Marker, the colonists began experiencing insomnia and uneasiness. At the time of the Ishimura’s arrival before the commencement of the planet-cracking, the Red Marker had been extracted and brought into the colony, as many Unitologists believed this to be the Marker from their spiritual texts. After its removal, even more colonists began experiencing hallucinations, dementia, heightened aggression, and other psychological disturbances. Both the suicide and murder rates on the colony skyrocketed in the days following the Marker's unearthing.

Upon hearing of this "Marker", Captain Benjamin Matthius ordered it taken aboard the Ishimura, apparently following orders from the Church of Unitology. P.C.S.I. Security Chief Alissa Vincent objected, and Dr. Terrence Kyne questioned its nature. Some strange organic matter was discovered growing in the colony soon after the monolith discovery. A week later after the planet crack, the colony experienced a blackout and all radio contact was cut off. Soon after the colonists began going insane, causing panic, murder, suicide, mutilation, and finally a Necromorph outbreak. This prompted the surviving colonists to flee Aegis VII via shuttles from the shuttle bay to the safety of the Ishimura. An overloaded passenger shuttle crashed into the bay, destroying all the remaining shuttles with it. The survivors were stranded on the planet and more desperate to push upward for the Ishimura.

Aegis VII as seen in Downfall.

Later, Isaac Clarke went down to Aegis VII to return the Red Marker, believing that it would stop the Necromorph threat from spreading further. Isaac successfully returned it to the pedestal, appeasing the Hive Mind but disrupting the gravity tethers holding a large portion of Aegis VII several miles above the surface, threatening to destroy the colony. Kendra Daniels then stole the artefact in order to deliver it to the Earth Government, but the Hive Mind crushed her before she could get it back to her ship. Isaac defeated the Hive Mind and left the planet on his ship just before the extracted rock fell on the surface.

Final destruction[]

Aegis VII was severely devastated from the impact—in which Clarke was publicly recognized for being responsible for the destruction—with the entire planet becoming unstable, much of its surface flowing with magma and falling apart. Three weeks later, the USG O'Bannon visited the planet to investigate and recover remnants of Marker 3A. Gravity field generators were deployed onto Aegis VII from the O'Bannon to stabilize the planet. Circumstances after recovering a fragment of the Red Marker caused O'Bannon crew member Nikolas Kuttner to destroy one of the generators, subsequently causing Aegis VII to explode.

The following explosion heavily damaged the O'Bannon, killing several crew members. Because of the recovered Marker shard, it launched yet another Necromorph outbreak similar to the one on the Ishimura, but it came to an end as the shard was thrown into the ship's reactor core, ending the nightmare for good. Blame for damage to the USG Ishimura was placed on Isabel Cho, Chief Medical Officer of the USG O'Bannon.

Spoilers end here.


  • After the events of Dead Space, EarthGov has put a military blockade around Cygnus System and quarantined the remains of the planet, as seen in Dead Space: Salvage.
  • Strangely enough, the air on Aegis VII is breathable in Dead Space, as demonstrated by Kendra Daniels not wearing any sort of helmet while on the planet. This appears to run contrary to both Downfall and Extraction, where the mining teams are always shown wearing full safety equipment. It should be noted, though, that Extraction also features a section where protagonist Nathan McNeill is exposed to the planet's atmosphere for short periods and has no trouble breathing.
  • If the statement "several million light years" is taken literally, it is almost certain that the Aegis system is located in either the Andromeda or the Triangulum Galaxy, although it is most likely that the statement is a mere hyperbole that exaggerates Aegis VII's distance from Earth and implying great distance. The statement also possibly includes the illegal mining colony more or less staying undetected until the Ishimura arrives.
  • Also, in Dead Space 3, there is a text log that states S.C.A.F. discovered Tau Volantis "on the other side of the Milky Way galaxy" and also that "it is the farthest man has ever gone from Earth". Considering Aegis VII was discovered before Tau Volantis, this can only mean that Aegis VII is somewhere in our galaxy closer to Earth than the icy "back water planet" Tau Volantis.
  • The early look of the planet was greatly different from the final production. The terrain looked much less symmetrical with huge canyons riddled across the planet. The hole where the colony was located looked more like a volcano. The planet also appeared more white-ish, as in the final production the ground glows almost in red colors.
  • Coincidentally, after the planet-crack, the planet resembles the first Death Star from the Star Wars series.



  • In the Dead Space universe, the location of Aegis VII can be found within the Cygnus System, possibly hinting that the Cygnus System is located in or around the Cygnus Constellation.
  • Aegis VII is shown to have a ring of asteroids around it, although logs describe this as a side effect of the planet cracking process.
  1. Dead Space: Downfall identifies Aegis VII as being in the Cygnus System; however, it is referred to as the Aegis System by other sources.
  2. A text log located on the Mining Deck states that normally the quantity of precious minerals would be 35%, but the valuable mineral concentration of Aegis VII`s is 65%.