Returnal’s house sequences, combined with audio logs found in specific Atropos biomes, allow the complete assembly of the night Selene crashed: she received a radio signal from Atropos matching her mother’s voice, deviated course to investigate, and crashed while following the signal. The crash was not accidental — she was drawn there.
The house sequences show Selene’s childhood relationship with her mother, who was also an astronaut, who disappeared on a mission when Selene was young. The Atropos signal is her mother’s last transmission — broadcast forward through time by the planet’s anomalous properties, received by Selene decades later.
Housemarque built the revelation that Selene’s crash was her own choice — unconscious, following a voice she had been waiting to hear for her entire career — into audio collectibles that most players find in pieces across multiple in-game cycles.
The white shadow that appears throughout Atropos — the spectral figure in the distant landscapes — is Selene’s mother. Housemarque confirmed this in post-launch interviews. She is never close enough to speak to. The planet is showing Selene what drew her there.

Really fascinating breakdown — I had no idea this was hidden in plain sight the whole time. Going back for another playthrough immediately.
The amount of craft that went into hiding this detail is remarkable. Pure game design artistry.