Technology

Bizarre Chernobyl fungus that feeds on radiation may be key to space travel

2025-12-01 12:34
959 views
Bizarre Chernobyl fungus that feeds on radiation may be key to space travel

The strange quirk could be down simply to its colour.

Bizarre Chernobyl fungus that feeds on radiation may be key to space travel Josh Milton Josh Milton Published December 1, 2025 12:34pm Updated December 1, 2025 12:48pm Share this article via whatsappShare this article via xCopy the link to this article.Link is copiedShare this article via facebook Comment now Comments Chernobyl fungus Don’t worry, it’s nothing like The Last of Us (Picture: Metro.co.uk)

Inside one of the most radioactive reactors in the Chernobyl Nuclear Power Plant, a fungus has evolved a bit of a quirk.

It can gobble up radiation.

Cladosporium sphaerospermum has been found growing on the walls of the notorious No. 4 nuclear reactor, where the highest levels of radiation have been detected.

A black fungus is healing Chernobyl by eating radiation The fungus can thrive in radioactive conditions (Picture: PA)

What is the Chernobyl fungus?

The fungus was discovered in the late 1990s by microbiologist Nelli Zhdanova of the Ukrainian National Academy of Sciences.

It was one of some 39 species discovered growing on the walls and other parts of the unit.

A reactor at the plant melted down in 1986, releasing smoke and causing thousands of deaths from radiation.

METRO GRAPHICS Chernobyl Nuclear Power Plant Map Chernobyl Nuclear Power Plant is about 70 miles north of Kyv (Picture: Metro.co.uk)

An entire city, Pripyat, was evacuated and is abandoned to this day, lying within a 19-mile exclusion zone.

Cladosporium sphaerospermum is sometimes mistaken for black mould as it can be an olive green, brown or black colour.

In its long list of quirks, it is xerotolerance, meaning it can grow easily without water.

Inhaling the spores can cause sneezing, runny noses and itching – people with asthma may experience breathing difficulties, too.

How does Chernobyl fungus feed on radiation?

Scientists think the fungus’ melanin – a pigment which determines things like our hair, skin and eye colour – allows it to absorb radiation.

Much like how plants lap up sunlight for photosynthesis, these fungi do the radioactive equivalent, called radiosynthesis.

Archive picture of the International Space Station photographed by Expedition 56 crew members from a Soyuz spacecraft after undocking, November 2018. Astronaut Jonny Kim has shared jaw-dropping images of the progress of Hurricane Gabrielle. Captured from aboard the International Space Station, the pictures posted Tuesday (Sep 23) show the vast storm system churning across the Atlantic. The hurricane rapidly strengthened from a Category 1 hurricane to a Category 4 in less than 30 hours, and is currently tracking north-east in the central North Atlantic. Posing no immediate threat to Bermuda or the US coast, it continues to generate high surf and rip current risks along the eastern seaboard. Kim, a former US Navy SEAL and physician before joining NASA?s astronaut corps, has described watching such natural events from orbit as both awe-inspiring and sobering. Photo released 24/09/2025 The fungus was sent up to the International Space Station, humanity’s stellar outpost (Picture: ISS/NASA / SWNS)

Could Chernobyl fungus be used in space travel?

A researcher of this strange fungus told the BBC that it could hold the key to space travel.

Nils Averesch, a biochemist at the University of Florida, explained to the broadcaster that C. sphaerospermum isn’t that fussed about cosmic rays.

This radiation is produced by supernovas – when stars collapse – and particles spat out by our sun and can cause health issues for astronauts.

As the US and China intend to build lunar bases, and dreams of placing an astronaut’s boots on Mars are being floated by Elon Musk’s SpaceX, scientists are looking for a way to shield people from cosmic rays.

TOPSHOT - A photograph shows dogs passing by a Ferris wheel in background in the ghost town of Pripyat near the Chernobyl Nuclear Power Plant on May 29, 2022, amid the Russian invasion of Ukraine. - More than a 100 employees who had shown up just hours before for their night shift were now trapped as Russian forces crossed into Ukraine and seized swaths of land as they marched toward Kyiv.??The capture of the Chernobyl by Russian forces kicked off a weeks-long ordeal that saw power briefly cut at the facility and employees carefully monitored by the invaders as they grappled with fresh uncertainty during the invasion's early days. (Photo by Dimitar DILKOFF / AFP) (Photo by DIMITAR DILKOFF/AFP via Getty Images) Alongside fungi, dogs, deer and even horses have been spotted trotting around the site (Picture: AFP)

Yet, cladosporium sphaerospermum ‘grows better in space’, Averesch said of his study that saw it sent to the International Space Station in 2018.

When faced with cosmic radiation for 26 days, the fungi grew 1.21 times faster than when on Earth.

While Averesch said this could be chalked up to micro-gravity, Averesch’s team also tested its melanin and found it acts almost like a force field.

Even a dab of mould on a petri dish protected it from radiation.

The researchers said: ”Considering the comparatively thin layer of biomass, this may indicate a profound ability of C. sphaerospermum to absorb space radiation in the measured spectrum.’

Lynn J Rothschild, an astrobiologist at Nasa’s Ames Research Centre, has suggested we build fungal furniture and walls to act as radiation barriers.

A view inside the "new safe confinement" shelter that spans the remains of the Chernobyl nuclear power plant's Reactor No. 4, in Chernobyl, Ukraine, Wednesday, July 10, 2019. A structure built to confine radioactive dust from the nuclear reactor at the center of the 1986 Chernobyl disaster was formally unveiled on Wednesday. (Ukrainian Presidential Press Office via AP) The fungus was found growing in reactor four (Picture: AP)

The fungi could eventually help to clean up radioactive waste – and even protect humans from radiation during deep space missions.

More Trending

A team of US researchers said in 2020: ‘With concrete efforts to return humans to the Moon by 2024 under the Artemis program and establish a permanent foothold on the next rock from Earth by 2028, humankind reaches for Mars as the next big leap in space exploration.

‘In preparation for prolonged human exploration missions venturing past Earth-orbit and deeper into space, the required capabilities significantly increase.’

‘Therefore, any mission scenario must include innovative solutions that can meet the needs and address the hazards of prolonged habitation on celestial surfaces.

‘The foremost threat to the short – and long-term health of astronauts on long-duration deep-space missions is radiation.’

Get in touch with our news team by emailing us at [email protected].

For more stories like this, check our news page.

Comment now Comments Add Metro as a Preferred Source on Google Add as preferred source News Updates

Stay on top of the headlines with daily email updates.

Email I agree to receive newsletters from Metro I agree to receive newsletters from Metro Sign UpSign Up

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Your information will be used in line with our Privacy Policy