A SpaceX Falcon 9 rocket carrying the company's Dragon spacecraft is launched on NASA’s SpaceX Crew-6 mission to the International Space Station with NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev onboard, Thursday, March 2, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. Bowen, Hoburg, Alneyadi, and Fedyaev launched at 12:34 a.m. EST from Launch Complex 39A at the Kennedy Space Center to begin a six month mission aboard the orbital outpost. Photo Credit: (NASA/Joel Kowsky)

Expedition 47 Flight Engineer Jeff Williams of NASA waves farewell after boarding the bus to launch pad 1 to board the Soyuz TMA-20M spacecraft on Saturday, March 19, 2016 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the early hours of March 19 Baikonur time, and will carry Williams and fellow crewmates, Soyuz Commander Alexey Ovchinin and Flight Engineer Oleg Skripochka of Roscosmos into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (GCTC/Andrey Shelepin)

Russian Search and Rescue teams arrive at the Soyuz MS-19 spacecraft shortly after it landed in a remote area near the town of Zhezkazgan, Kazakhstan with Expedition 66 crew members Mark Vande Hei of NASA, and cosmonauts Pyotr Dubrov, and Anton Shkaplerov of Roscosmos, Wednesday, March 30, 2022. Vande Hei and Dubrov are returning to Earth after logging 355 days in space as members of Expeditions 64-66 aboard the International Space Station. For Vande Hei, his mission is the longest single spaceflight by a U.S. astronaut in history. Shkaplerov is returning after 176 days in space, serving as a Flight Engineer for Expedition 65 and commander of Expedition 66. Photo Credit: NASA/Bill Ingalls

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft onboard is seen on the launch pad at Launch Complex 39A during a brief static fire test ahead of NASA’s SpaceX Crew-6 mission, Friday, Feb. 24, 2023, at the agency’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev are scheduled to launch at 1:45 a.m. EST on Feb. 27, from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-15 spacecraft is launched with Expedition 61 crewmembers Jessica Meir of NASA and Oleg Skripochka of Roscosmos, and spaceflight participant Hazzaa Ali Almansoori of the United Arab Emirates Wednesday, Sept. 25, 2019 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Bill Ingalls)

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen on the launch pad at Launch Complex 39A as preparations continue for the Crew-5 mission, Saturday, Oct. 1, 2022, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-5 mission is the fifth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Nicole Mann and Josh Cassada, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, and Roscosmos cosmonaut Anna Kikina are scheduled to launch at 12:00 p.m. EDT on Oct. 5 from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top is seen on the launch pad at Launch Complex 39A as preparations continue for the Crew-6 mission, Wednesday, March 1, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev are scheduled to launch at 12:34 a.m. EST on March 2, from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut Christina Koch is helped out of the Soyuz MS-13 spacecraft just minutes after she, Roscosmos cosmonaut Alexander Skvortsov, and ESA astronaut Luca Parmitano, landed in a remote area near the town of Zhezkazgan, Kazakhstan on Thursday, Feb. 6, 2020. Koch returned to Earth after logging 328 days in space --- the longest spaceflight in history by a woman --- as a member of Expeditions 59-60-61 on the International Space Station. Skvortsov and Parmitano returned after 201 days in space where they served as Expedition 60-61 crew members onboard the station. Photo Credit: (NASA/Bill Ingalls)

Alexander Gerst of ESA (European Space Agency) is carried to a medical tent shortly after he, Sergey Prokopyev of Roscosmos, and Serena Auñón-Chancellor of NASA landed in their Soyuz MS-09 spacecraft near the town of Zhezkazgan, Kazakhstan on Thursday, Dec. 20, 2018. Auñón-Chancellor, Gerst, and Prokopyev are returning after 197 days in space where they served as members of the Expedition 56 and 57 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-20M spacecraft is rolled out to the launch pad by train in the early hours of Wednesday, March 16, 2016 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for March 19 and will carry Expedition 47 Soyuz Commander Alexey Ovchinin of Roscosmos, Flight Engineer Jeff Williams of NASA, and Flight Engineer Oleg Skripochka of Roscosmos into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

The Soyuz MS-01 spacecraft is seen as it lands with Expedition 49 crew members NASA astronaut Kate Rubins, Russian cosmonaut Anatoly Ivanishin of Roscosmos, and astronaut Takuya Onishi of the Japan Aerospace Exploration Agency (JAXA) near the town of Zhezkazgan, Kazakhstan on Sunday, Oct. 30, 2016(Kazakh time). Rubins, Ivanishin, and Onishi are returning after 115 days in space where they served as members of the Expedition 48 and 49 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

nhq202104170100 (April 17, 2021) --- The Soyuz MS-17 spacecraft is seen as it lands in a remote area near the town of Zhezkazgan, Kazakhstan with Expedition 64 crew members Kate Rubins of NASA, Sergey Ryzhikov and Sergey Kud-Sverchkov of Roscosmos, Saturday, April 17, 2021. Rubins, Ryzhikov and Kud-Sverchkov returned after 185 days in space having served as Expedition 63-64 crew members onboard the International Space Station. Photo Credit: NASA/Bill Ingalls

The Soyuz TMA-20M spacecraft is rolled out to the launch pad by train in the early hours of Wednesday, March 16, 2016 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for March 19 and will carry Expedition 47 Soyuz Commander Alexey Ovchinin of Roscosmos, Flight Engineer Jeff Williams of NASA, and Flight Engineer Oleg Skripochka of Roscosmos into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

A SpaceX Falcon 9 rocket carrying the company's Dragon spacecraft is launched on NASA’s SpaceX Crew-6 mission to the International Space Station with NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev onboard, Thursday, March 2, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. Bowen, Hoburg, Alneyadi, and Fedyaev launched at 12:34 a.m. EST from Launch Complex 39A at the Kennedy Space Center to begin a six month mission aboard the orbital outpost. Photo Credit: (NASA/Joel Kowsky)

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen on the launch pad at Launch Complex 39A as preparations continue for the Crew-5 mission, Tuesday, Oct. 4, 2022, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-5 mission is the fifth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Nicole Mann and Josh Cassada, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, and Roscosmos cosmonaut Anna Kikina are scheduled to launch at 12:00 p.m. EDT on Oct. 5 from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

nhq202104170103 (April 17, 2021) --- Expedition 64 Roscosmos cosmonaut Sergey Ryzhikov is seen outside the Soyuz MS-17 spacecraft after he, Roscosmos cosmonaut Sergey Kud-Sverchkov, and NASA astronaut Kate Rubins landed in a remote area near the town of Zhezkazgan, Kazakhstan on Saturday, April 17, 2021. Rubins, Ryzhikov and Kud-Sverchkov returned after 185 days in space having served as Expedition 63-64 crew members onboard the International Space Station. Photo Credit: NASA/Bill Ingalls

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen on the launch pad at Launch Complex 39A as preparations continue for the Crew-5 mission, Tuesday, Oct. 4, 2022, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-5 mission is the fifth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Nicole Mann and Josh Cassada, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, and Roscosmos cosmonaut Anna Kikina are scheduled to launch at 12:00 p.m. EDT on Oct. 5 from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-18 rocket is launched with Expedition 65 NASA astronaut Mark Vande Hei, Roscosmos cosmonauts Pyotr Dubrov and Oleg Novitskiy, Friday, April 9, 2021, at the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Bill Ingalls)

ExoMars Trace Gas Orbiter image of the eastern flank of Olympus Mons, the largest volcano in the Solar System. In this scene, lava flow fields and lava channels are cross-cut by large volcano-tectonic structures. Aligned depressions at the far right of the image hint at a possible collapsed lava tube.

The image was taken by the orbiter’s Colour and Stereo Surface Imaging System, CaSSIS on 25 May 2018 and captures an approximately 32 x 9.8 km segment centred at 15.8ºN/ 129.2ºW. North is to the right and slightly up in this orientation.

Credits: ESA/Roscosmos/CaSSIS, CC BY-SA 3.0 IGO

The Soyuz rocket is seen after being rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Monday, Nov. 14, 2016. NASA astronaut Peggy Whitson, Russian cosmonaut Oleg Novitskiy of Roscosmos, and ESA astronaut Thomas Pesquet will launch from the Baikonur Cosmodrome in Kazakhstan the morning of November 18 (Kazakh time.) All three will spend approximately six months on the orbital complex. Photo Credit: (NASA/Victor Zelentsov)

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top is seen on the launch pad at Launch Complex 39A as preparations continue for the Crew-6 mission, Friday, Feb. 24, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev are scheduled to launch at 1:45 a.m. EST on Feb. 27, from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-04 rocket launches from the Baikonur Cosmodrome in Kazakhstan on Thursday, April 20, 2017 Baikonur time carrying Expedition 51 Soyuz Commander Fyodor Yurchikhin of Roscosmos and Flight Engineer Jack Fischer of NASA into orbit to begin their four and a half month mission on the International Space Station. (Photo Credit: NASA/Aubrey Gemignani)

iss065e099693 (June 11, 2021) --- Roscosmos cosmonaut and Expedition 65 Flight Engineer Oleg Novitskiy shows off a drink bag during a midday meal aboard the International Space Station.

The Soyuz TMA-19M spacecraft is seen as it is raised into a vertical position on the launch pad at the Baikonur Cosmodrome on Sunday, Dec. 13, 2015 in Kazakhstan. Launch of the Soyuz is scheduled for Dec. 15 and will send Expedition 46 Soyuz Commander Yuri Malenchenko of the Russian Federal Space Agency (Roscosmos), Flight Engineer Tim Kopra of NASA, and Flight Engineer Tim Peake of ESA (European Space Agency) to the International Space Station for a six-month stay. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-02 rocket is launched with Expedition 49 Soyuz commander Sergey Ryzhikov of Roscosmos, flight engineer Shane Kimbrough of NASA, and flight engineer Andrey Borisenko of Roscosmos, Wednesday, Oct. 19, 2016 at the Baikonur Cosmodrome in Kazakhstan. Ryzhikov, Kimbrough, and Borisenko will spend the next four months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

An Orthodox priest blesses members of the media at the Baikonur Cosmodrome launch pad on Thursday, March 17, 2016 in Kazakhstan. Launch of the Soyuz rocket was scheduled for March 19 Baikonur time (March 18 in the U.S.) to carry the Expedition 47 Soyuz Commander Alexey Ovchinin of Roscosmos, Flight Engineer Jeff Williams of NASA, and Flight Engineer Oleg Skripochka of Roscosmos into orbit to begin their five and a half month mission on the International Space Station.

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Credit: NASA/Aubrey Gemignani

Image Number: NHQ201603170003

Date: March 17, 2016

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top is seen at sunset on the launch pad at Launch Complex 39A as preparations continue for the Crew-6 mission, Saturday, Feb. 25, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev are scheduled to launch at 1:45 a.m. EST on Feb. 27, from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

The Soyuz rocket is seen at dawn on launch site 1 of the Baikonur Cosmodrome, Thursday, March 14, 2019 in Baikonur, Kazakhstan. Expedition 59 astronauts Nick Hague and Christina Koch of NASA, along with Alexey Ovchinin of Roscosmos will launch later in the day, U.S. time, on the Soyuz MS-12 spacecraft from the Baikonur Cosmodrome for a six-and-a-half month mission on the International Space Station. Photo Credit: (NASA/Bill Ingalls)

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen on the launch pad at Launch Complex 39A as preparations continue for the Crew-5 mission, Saturday, Oct. 1, 2022, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-5 mission is the fifth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Nicole Mann and Josh Cassada, Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, and Roscosmos cosmonaut Anna Kikina are scheduled to launch at 12:00 p.m. EDT on Oct. 5 from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-09 rocket is seen as the gantry arms are lowered prior to launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top is seen illuminated by spotlights on the launch pad at Launch Complex 39A as preparations continue for the Crew-7 mission, Tuesday, Aug. 22, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-7 mission is the seventh crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronaut Jasmin Moghbeli, ESA (European Space Agency) astronaut Andreas Mogensen, Japan Aerospace Exploration Agency (JAXA) astronaut Satoshi Furukawa, and Roscosmos cosmonaut Konstantin Borisov are scheduled to launch at 3:50 a.m. EDT on Friday, August 25, from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

The Soyuz MS-17 rocket is seen on the launch pad with Expedition 64 Russian cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov of Roscosmos, and NASA astronaut Kate Rubins boarded their spacecraft for launch, Wednesday, Oct. 14, 2020, at the Baikonur Cosmodrome in Kazakhstan. The trio launched at 1:45 a.m. EDT to begin a six-month mission onboard the International Space Station. Photo Credit: (NASA/GCTC/Andrey Shelepin)

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top is seen at sunset on the launch pad at Launch Complex 39A as preparations continue for the Crew-6 mission, Saturday, Feb. 25, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Crew Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev are scheduled to launch at 1:45 a.m. EST on Feb. 27, from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

Expedition 52 Flight Engineer Peggy Whitson, left, Commander Fyodor Yurchikhin of Roscosmos, center, and Fight Engineer Jack Fischer of NASA, are seen inside the Soyuz MS-04 spacecraft shortly after in landed near the town of Zhezkazgan, Kazakhstan on Sunday, Sept. 3, 2017 (Kazakh time). Whitson is returning after 288 days in space where she served as a member of the Expedition 50, 51 and 52 crews. Yurchikhin and Fischer are returning after 136 days in space where they served as members of the Expedition 51 and 52 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Expedition 52 crew members (front row, from left) are Commander Fyodor Yurchikhin and NASA astronaut Randy Bresnik. In the back row (from left) are, NASA astronauts Jack Fischer and Peggy Whitson, European Space Agency astronaut Paolo Nespoli and Roscosmos cosmonaut Sergey Ryazanskiy.

Tim Peake of the European Space Agency rests in a chair outside the Soyuz TMA-19M spacecraft just minutes after he and Yuri Malenchenko of Roscosmos and Tim Kopra of NASA landed in a remote area near the town of Zhezkazgan, Kazakhstan on Saturday, June 18, 2016. Kopra, Peake, and Malenchenko are returning after six months in space where they served as members of the Expedition 46 and 47 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft onboard is seen on the launch pad at Launch Complex 39A during a brief static fire test ahead of NASA’s SpaceX Crew-6 mission, Friday, Feb. 24, 2023, at the agency’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev are scheduled to launch at 1:45 a.m. EST on Feb. 27, from Launch Complex 39A at the Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)

A technician places a nearly 70 kg parachute designed for ESA and Roscosmos’s ExoMars 2020 mission inside the dry heater steriliser of the Agency’s Life, Physical Sciences and Life Support Laboratory, based in its Netherlands technical centre.

Mars is a potential abode of past and perhaps even present-day life. Accordingly, international planetary protection regulations require any mission sent to the Red Planet to undergo rigorous sterilisation, to prevent terrestrial microbes from piggybacking their way there.

The Lab’s Alan Dowson explains: “This is the ‘qualification model’ of the 35-m diameter main parachute for ExoMars 2020, basically a test version which allows us to finalise our sterilisation procedures ahead of the flight model chute’s arrival.

“This version has been threaded with thermal sensors, allowing us to see how long it takes to reach the required sterilisation temperature in all parts of the folded parachute, even in the hardest to heat points. Our target was to sterilise at 125 °C for 35 hours and 26 minutes, and the oven took about 44 hours to reach that temperature to begin with.”

The oven is part of the Lab’s 35 sq. m ‘ISO Class 1’ cleanroom, one of the cleanest places in Europe. All the cleanroom’s air passes through a two-stage filter system. Anyone entering the chamber has to gown up in a much more rigorous way than a hospital surgeon, before passing through an air shower to remove any remaining contaminants.

“If you imagine our clean room as being as big as the entire Earth’s atmosphere, then its allowable contamination would be equal to a single hot air balloon,” adds Alan. “Our ISO 1 rating means we have less than 10 dust particles measuring a tenth of one millionth of a metre in diameter per cubic metre of air.”

The mostly nylon and Kevlar parachute, packed into an 80-cm diameter donut-shaped unit, was delivered by Italy’s Arescosmo company. This qualification model will now be sent back there for testing, to ensure this sterilisation process causes no change to the parachute’s material properties.

Alan explains: “We will receive the parachute flight model later this spring for the same sterilisation process – identical to this version, except without any thermal sensors.”

ExoMars’s smaller first stage 15-m diameter parachute has already gone through sterilisation using the oven. This is the parachute that opens during initial, supersonic atmospheric entry, with the second, larger chute opening once the mission has been slowed to subsonic velocity.

The Lab has also tackled a variety of ExoMars instruments and subsystems, but this second stage subsonic parachute is the single largest item to be sterilised. The sterilisation process aims to reduce the overall mission ‘bioburden’ to a 10 thousandth of its original level.

Credits: ESA–M. Cowan

nhq202104060020 (April 6, 2021) --- The Soyuz rocket is raised vertical, Tuesday, April 6, 2021, at the Site 31 launch pad of the Baikonur Cosmodrome in Kazakhstan. Expedition 65 NASA astronaut Mark Vande Hei, Roscosmos cosmonauts Pyotr Dubrov and Oleg Novitskiy are scheduled to launch aboard their Soyuz MS-18 spacecraft on April 9. Photo Credit: (NASA/Bill Ingalls)

The Soyuz rocket launches to the International Space Station with Expedition 75 crewmembers: NASA astronaut Anil Menon, Roscosmos cosmonauts Pyotr Dubrov, and Anna Kikina onboard, Tuesday, July 14, 2026, at the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Bill Ingalls)

Roscosmos cosmonaut Anna Kikina is helped onto a helicopter onboard the SpaceX recovery ship Shannon shortly after she, along with NASA astronauts Josh Cassada, Nicole Mann, and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, landed while onboard SpaceX Dragon Endeavor spacecraft in the Gulf of Mexico off the coast of Tampa, Florida, Saturday, March 11, 2023. Mann, Cassada, Wakata, and Kikina are returning after 157 days in space as part of Expedition 68 aboard the International Space Station. Photo Credit: (NASA/Keegan Barber).

Two emergency egress vehicles are seen positioned at the slidewire termination area at Launch Complex 39A as a SpaceX Falcon 9 rocket carrying the company's Dragon spacecraft is launched on NASA’s SpaceX Crew-6 mission to the International Space Station with NASA astronauts Stephen Bowen and Warren "Woody" Hoburg, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev onboard, Thursday, March 2, 2023, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-6 mission is the sixth crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. Bowen, Hoburg, Alneyadi, and Fedyaev launched at 12:34 a.m. EST from Launch Complex 39A at the Kennedy Space Center to begin a six month mission aboard the orbital outpost. Photo Credit: (NASA/Joel Kowsky)

iss065e085163 (June 2, 2021) --- Expedition 65 Flight Engineer and Roscosmos cosmonaut Pyotr Dubrov is pictured during a seven-hour and 19-minute spacewalk to ready the Pirs docking compartment ahead of its upcoming departure. The Nauka multipurpose laboratory module, being launched soon from the Baikonur Cosmodrome in Kazakhstan, will replace Pirs on the Zvezda service module's Earth-facing port.

iss069e008757 (May 3, 2023) --- Roscosmos spacewalkers Sergey Prokopyev and Dmitri Petelin work outside the International Space Station's Roscosmos segment during the installation of an experiment airlock on the Nauka multipurpose laboratory module.

The Soyuz TMA-19M rocket is launched with Expedition 46 Soyuz Commander Yuri Malenchenko of the Russian Federal Space Agency (Roscosmos), Flight Engineer Tim Kopra of NASA, and Flight Engineer Tim Peake of ESA (European Space Agency), Tuesday, Dec. 15, 2015 at the Baikonur Cosmodrome in Kazakhstan. Malenchenko, Kopra, and Peake will spend the next six-months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)

nhq201606180002 (06/18/2016) --- The Soyuz TMA-19M spacecraft is seen as it lands with Expedition 47 crew members Tim Kopra of NASA, Tim Peake of the European Space Agency, and Yuri Malenchenko of Roscosmos near the town of Zhezkazgan, Kazakhstan on Saturday, June 18, 2016. Kopra, Peake, and Malenchenko are returning after six months in space where they served as members of the Expedition 46 and 47 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Soyuz MS-05 spacecraft is seen in this black and white infrared view after being raised into a vertical position on the launch pad at the Baikonur Cosmodrome, Kazakhstan, Wednesday, July 26, 2017. Expedition 52 flight engineer Sergei Ryazanskiy of Roscosmos, flight engineer Randy Bresnik of NASA, and flight engineer Paolo Nespoli of ESA (European Space Agency), launched to the International Space Station aboard the Soyuz spacecraft from the Baikonur Cosmodrome two days later, on July 28, 2017.

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Credit: NASA/Joel Kowsky

Image Number: NHQ201707260039

Date: July 26, 2017

NASA astronaut Jeff Williams, left, Russian cosmonaut Alexey Ovchinin of Roscosmos, center, and Russian cosmonaut Oleg Skripochka of Roscosmos sit in chairs outside the Soyuz TMA-20M spacecraft a few moments after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 7, 2016(Kazakh time). Williams, Ovchinin, and Skripochka are returning after 172 days in space where they served as members of the Expedition 47 and 48 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The gantry arms are seen closing around the Soyuz rocket in this long exposure photograph, Tuesday, Oct. 9, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 57 crewmembers Nick Hague of NASA and Alexey Ovchinin of Roscosmos are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)