Brandwhens

Brandwhens are a fictional species appearing in the science fiction novel "Project Hail Mary" by Andy Weir. They are an extraterrestrial, silicon-based life form originating from the planet Erid. Brandwhens are characterized by their hexagonal bodies, composed of interlocking plates, and their ability to manipulate electromagnetic fields. Their physiology allows them to survive in extremely harsh environments, including the vacuum of space, and to communicate through complex patterns of light emissions.

In the narrative, Brandwhens are encountered by the human protagonist, Ryland Grace, as they are also facing an existential threat to their home world. Their intelligence is implied to be significant, and they possess advanced technological capabilities, though their exact societal structure and motivations are not fully detailed. Their biological makeup differs significantly from carbon-based life, presenting unique challenges and opportunities for interaction and understanding. The Brandwhens' presence in the story serves to highlight the diversity of life that might exist beyond Earth and the complexities of interstellar communication and cooperation.