Micrometeoroid strike could be cause of Russian spacecraft leak - official | Tech News

Micrometeoroid strike could be cause of Russian spacecraft leak - official

A coolant leak aboard a Russian Soyuz space capsule docked to the International Space Station could have been caused by a tiny meteoroid strike.

| Updated on: Dec 16 2022, 19:16 IST
NASA In Pics: Stunning images of Soyuz launch captured by International Space Station
Soyuz Space Capsule
1/5 NASA astronauts aboard the International Space Station witnessed the launch of the Soyuz MS-22 spacecraft which took off from Baikonur Cosmodrome in Kazakhstan on September 21, carrying one NASA astronaut and two Russian cosmonauts. (Bob Hines/Twitter)
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2/5 NASA astronaut Frank Rubio and two cosmonauts Sergey Prokopyev and Dmitri Petelin arrived at the International Space Station on September 21, making a total of 10 residents aboard the ISS at least until the end of the week. Many of them will depart the ISS in the coming week as their 6-month tenure aboard the orbiting lab comes to an end. (AP)
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3/5 European Space Agency (ESA) astronaut Samantha Cristoforetti posted mesmerizing images of the launch on her Twitter. She wrote, “We had a spectacular view of the #Soyuz launch! Sergey, Dmitry and Frank will come knocking on our door in just a couple of hours … looking forward to welcoming them to their new home!” (Samantha Cristoforetti/Twitter)
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4/5 NASA astronaut Bob Hines also shared images of the launch on his Twitter page. He wrote, “Ever wonder what a [rocket] launch looks like from space? It’s amazing!!” The NASA and ESA astronauts seem excited to welcome their new co-workers aboard the spacecraft, despite the ongoing tensions with Russia. (Bob Hines/Twitter)
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5/5 According to NASA, all three newly arrived astronauts are part of the Expedition 68 crew which will take the research aboard the spacecraft for a period of 6 months. NASA said,” Throughout their six-month stay aboard the orbital outpost, the trio will work on science and research in technology development, Earth science, biology, human research, and more.” (Bob Hines/Twitter)
Soyuz Space Capsule
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Micrometeoroid could be behind the Soyuz space capsule coolant leak, claims Russian official. (AFP)

A coolant leak lasting for at least three hours Wednesday night aboard a Russian Soyuz space capsule docked to the International Space Station could have been caused by a tiny meteoroid strike, a senior Russian space official said Thursday.

NASA and Russia's space agency, Roscosmos, said no astronauts were endangered by the leak, which forced mission control officers in Moscow to call off a planned spacewalk by two cosmonauts as fluid sprayed outward into space, as seen on live video during a NASA webcast.

"The cause of the leak in Soyuz MS-22 could be a micrometeoroid hitting the ship's radiator," Sergei Krikalev, head of human spaceflight at Roscosmos, said in a statement posted on Telegram.

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Tiny micrometeoroids, or space rocks, most of them as small as a grain of sand, are a normal part of the space environment as they zip through the solar system in random directions and typically cause little or no substantive damage to the ISS and other spacecraft protected by advanced shielding.

Russian officials are leading an investigation into the cause of the leaky fluid, which spewed from a radiator cooling loop on the exterior of Russia's Soyuz MS-22 spacecraft starting around 7:45 p.m. Eastern time on Wednesday (0045 GMT Thursday), NASA said. The liquid coolant is used to regulate temperatures on the capsule.

NASA said MS-22's temperatures "remain within acceptable limits." Neither the U.S. space agency nor Roscosmos explained the spacecraft's temperature range, how close the vessel was to reaching those limits, how much coolant escaped or what time the leakage stopped.

The same Soyuz spacecraft ferried cosmonauts Sergey Prokopyev and Dimitri Petelin along with NASA astronaut Frank Rubio to the space station in September, marking the first joint U.S.-Russian flight under a renewed agreement between NASA and Roscosmos allowing commingled crews on journeys to and from the space station. Prokopyev and Petelin were the two suited up for a six-hour spacewalk when the coolant leak began.

The space station, a football field-sized laboratory housing astronauts on a continuous basis for over two decades, has a current crew of seven. The four other members of the latest expedition arrived in October aboard a SpaceX Crew Dragon capsule. That crew includes two NASA astronauts, a Japanese astronaut and one cosmonaut.

The leak raised immediate questions about whether MS-22 will be able to return its three-man crew to Earth in March 2023 as originally planned, or if NASA and Roscosmos will need to pursue contingency plans.

The spacewalk planned for Wednesday night was postponed once before, in late November, because of faulty cooling pumps in the cosmonauts' spacesuits. And in August, a Russian spacewalk was cut short by a battery issue with one of the cosmonauts' spacesuits.

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First Published Date: 16 Dec, 19:16 IST