
The result is a series of near-perfect replicas that are dubbed Red Markers.
The Sovereign Colonies researchers successfully reverse-engineer the Black Marker. The events of Dead Space: Catalyst take place. March 15, 2215: Michael Altman is assassinated, becoming a martyr for the fledgling Church of Unitology which eventually grows to become the single largest religion in human space. Michael Altman reveals the existence of the Black Marker to the public against the government's wishes. The Black Marker is discovered on the Yucatán Peninsula in Mexico, with the researchers determining that it is a source of limitless energy. The events of Dead Space: Martyr take place. The New Horizons Lunar Colony is built on the Moon. The Tau Volantis aliens become extinct. The aliens construct a Machine, flash freezing Tau Volantis and halting the Convergence Event. The Black Marker triggers a Convergence Event by creating a Brethren Moon. The aliens build Red Markers across the planet's surface in the hopes of harboring more energy for their uses. The alien inhabitants of Tau Volantis discover a Black Marker. Mercer survived for so long, story wise the marker knew he was speeding up convergence so kept him alive to further that goal, Hammond survived by himself for a while so did Kendra, and Kendra didn’t have a weapon either, so having Cross live as long as she did does fit the narrative, and having her be the physical body of Nicole makes even more sense, since it would be impossible for a hallucination to interact with the environment and open a door for Isaac.05 February 2013 2 million years ago
The marker messes with peoples heads, and makes them hallucinate in different ways, Kyne saw his wife and was having conversations with her, despite her not actually being there, I can’t exactly follow your logic of how did she survive, look at Jacob temple even in the original game, he survived without a suit like Isaac, and in the remake he pretty much only had a force gun.