Project Hail Mary is real? Scientists discover vast underground fungal network spanning 110 quadrillion kilometres

The massive cinematic success of the Project Hail Mary film adaptation starring Ryan Gosling has reignited our collective obsession with deep-space secrets and mysterious alien lifeforms. Yet, while the search for extraterrestrial intelligence continues to look toward the stars, scientists have just made a mind-boggling discovery right beneath our feet. An international research initiative has uncovered a colossal, invisible web of microscopic fungi weaving an estimated 110 quadrillion kilometers through Earth's topsoil. This staggering underground network spans a distance so unimaginably vast that it could stretch from our planet to the Sun and back nearly a billion times.

Earth's hidden web

The mind-melting scale of this terrestrial discovery heavily mirrors the premise of Andy Weir’s bestselling sci-fi novel. In his story, audiences are introduced to Astrophage, a microscopic space organism capable of holding and moving immense amounts of energy to dictate cosmic events. While the newly mapped underground networks are completely homegrown and do not possess the sci-fi traits of Astrophage, researchers find the parallel highly accurate. Both instances showcase how an invisible, microscopic biological system can secretly control a larger environment and wield an ecological influence far grander than its physical size suggests.


In reality, these organisms have quietly managed our planet’s well-being for hundreds of millions of years. The breakthroughs regarding these microscopic threads—known scientifically as hyphae—come courtesy of the Society for the Protection of Underground Networks (SPUN). By analyzing over 16,000 distinct soil samples across the globe and utilizing sophisticated computational modeling, the scientific team constructed the most comprehensive map ever made of arbuscular mycorrhizal (AM) fungi.

Nature's climate ally

This complex underground network thrives beneath our local gardens, sweeping grasslands, and ancient forests. It operates as a highly sophisticated natural trade agreement with roughly 70% of all land-based plants. Through the power of photosynthesis, plants create essential sugars and pass this energy down to feed the fungi. In exchange, the fungi act as a subterranean extension of the flora's roots, traveling deep into the soil to retrieve water and essential nutrients like nitrogen and phosphorus that plants otherwise could never reach.

Because of this interconnected nature, scientists frequently refer to this ecological matrix as the "wood wide web." The subterranean threads structurally link entirely different plants together, serving as a biological highway for nutrients and water. Evidence suggests that plants might even utilize this network to transmit urgent distress signals to neighboring flora when facing impending threats like insect swarms, severe droughts, or rampant diseases. Without this foundational system, a vast majority of land plants would quite simply fail to survive.

Beyond merely feeding the world's flora, this massive network stands as a crucial baseline buffer against modern environmental degradation. The fungi pull carbon-rich compounds deep into the earth, effectively sequestering up to one billion metric tons of atmospheric carbon every single year. The global mapping project pinpointed the absolute highest densities of these networks within untamed, pristine ecosystems like floodplains, wetlands, and natural grasslands. Major wetland territories, specifically South Sudan’s vast Sudd wetlands and Florida’s iconic Everglades, stood out as invaluable global hotspots that are absolutely critical for biodiversity, planetary soil health, and climate stability.