Alone aboard a forgotten deep-space observatory on the outer rim of human space, astrophysicist Elizabeth Ward lives by one rule: trust the data. When a routine calibration reveals impossible shifts in the positions of distant stars, she assumes what every scientist would-the instruments are failing. But after exhausting every diagnostic, rebuilding her sensors by hand, and cross-checking observations against independent probes scattered across the solar frontier, the truth becomes impossible to ignore. The stars are not where they should be. As Elizabeth uncovers evidence of a vast gravitational distortion stretching across light-years, she discovers something far more terrifying than a hidden black hole or unseen dark matter structure: an immense, invisible boundary moving silently toward the galaxy itself. Ignored by the institutions she serves and isolated farther from humanity than anyone alive, Elizabeth must confront a reality that human civilization was never meant to see-that the universe may not be an open void at all, but a carefully misunderstood horizon. Invisible Constellations is a hard science fiction thriller blending astrophysics, cosmic mystery, and existential dread into a story of isolation, discovery, and humanity's fragile understanding of reality.
