The message cut off. Not because the signal stopped, but because something listened back .
The first test came when Elara dreamed of a blue door that didn't exist. The second night, she woke up with a new equation in her handwriting, proving that faster-than-light travel was possible by collapsing probability waves via retrocausal observation —a theory she'd never studied. The third night, she didn't wake up.
Elara woke up gasping, the equation for retrocausal travel fully formed in her mind. The machine would take a year to build. It would kill her—unmaking her from the timeline as she traveled to a place that wasn't a place, a time that wasn't time.
Over the next seventy-two hours, Elara discovered the horrifying truth. The CMB wasn't just afterglow of the universe's birth. It was a palimpsest. A layered recording of every thought ever projected into the cosmos by intelligent species. And someone—or some when —had learned to write onto the oldest layer, so the signal would propagate forward in time to every civilization that ever evolved.
Dr. Elara Vance had spent twenty years listening to the cosmic microwave background—the echo of the Big Bang. Her job was to find patterns in the noise. But tonight, the noise found her back.
