A team of Siganesinnen specialists investigates the mysterious Konstrukt der Ylanten, uncovering crucial secrets about NATHAN’s legacy, the enigmatic Ylanten, and the cosmic phenomenon known as the Brennendes Nichts. As tensions rise between key characters and revelations about ancient backup plans and memory storage emerge, the story propels the ongoing cycle forward with new intrigue and scientific speculation.

Reader Review Summary

Set in the Perry Rhodan universe, this installment centers on the Siganesinnen team, specialists of the USO, as they navigate the mysterious construct of the Ylanten. The narrative unfolds primarily on Luna, focusing on Aurelia Bina's condition and the legacy of NATHAN, with significant plotlines involving the Siganesinnen's discoveries and the ongoing Koma crisis. The story integrates elements such as the brennendes Nichts (burning nothingness), the revelation of NATHAN's ÜBSEF-Konstante, and ES's long-term backup plans, while also featuring characters like Icho Tolot and Monkey, whose interactions are marked by competence disputes. The book is part of a double volume, following up on threads from the previous issue and setting up developments for the next. Supplemental material includes articles by Rüdiger Vaas, which discuss cosmic structures and are referenced by several readers.

Readers appreciated the increased pace compared to the first part of the double volume, particularly noting that the Siganesinnen team became more engaging and central to the plot. The technical and scientific revelations, such as the nature of the brennendes Nichts and the backup plans of ES and NATHAN, were highlighted as important and intriguing. The competence disputes between Icho Tolot and Monkey, as well as the gradual resolution of Aurelia Bina's crisis, added layers of tension and interest. The inclusion of the Perry Rhodan Journal, especially the articles on cosmic networks and galaxy superclusters, was also positively received, with some readers noting their prior familiarity with the material.

Some readers found the book slow or tedious in parts, particularly criticizing the lengthy recap at the beginning, which repeated information from the previous volume. There was a sense that the storyline involving the Ylanten and NATHAN did not fully engage all readers, with some expressing limited enthusiasm for these elements. The earth-based plotline was described as the least interesting among the current narrative threads. Additionally, the black-and-white graphics in the supplemental articles were seen as less effective compared to their original color versions.

The book received an average rating of 3.4 out of 5 from 20 readers, with 8 providing full reviews. It was published on March 21, 2025, and falls within the space opera and science fiction genres. The narrative is part of a larger cycle, with several readers referencing ongoing speculation about the series' direction and the anticipation of future developments. The author, Susan Schwartz (Uschi Zietsch), continues to build on established Perry Rhodan lore, and the book's events are expected to be further developed in subsequent volumes, particularly by Ben Calvin Hary.