Tag: iss
What You Need to Know About NASA’s SpaceX Crew-6 Mission to the ISS
A new astronaut crew is getting ready to cohabitate in low Earth orbit while conducting dozens of science experiments and research during a six-month period on board the International Space Station.
Another coolant leak affects cargo spacecraft docked to ISS
A second Russian spacecraft docked at the ISS is leaking coolant
Stop us if you’ve heard this one before, but a Russian spacecraft docked with the International Space Station has sprung a leak. On Saturday morning, Russia’s Roscosmos space agency disclosed on Telegram that a Progress cargo ship docked with the ISS had lost cabin pressure. NASA later said the depressurization was due to a coolant leak.
“The reason for the loss of coolant in the Progress 82 spacecraft is being investigated,” NASA announced. “The hatches between Progress 82 and the station are open, and temperatures and pressures aboard the station are all normal. The crew, which was informed of the cooling loop leak, is in no danger and continuing with normal space station operations.”
Per Space.com, Progress 82 arrived at the ISS on October 28th. Before Saturday’s announcement, the spacecraft was scheduled to leave the station on February 17th. It’s unclear if Roscosmos will move forward with that timeline as originally planned. Russia’s Progress spacecraft are designed to burn up in the Earth’s atmosphere after they complete their resupply missions, meaning there’s no way for Roscosmos to investigate the leak on the ground. The timing of the discovery comes on the same day that a second Progress spacecraft docked with the ISS, and less than two months after another Russian spacecraft sprung a leak at the space station.
In December, Russia’s Soyuz MS-22 spacecraft began leaking coolant just as cosmonauts Dmitri Petelin and Sergey Prokopyev were preparing for a nearly seven-hour spacewalk. Roscosmos later blamed the incident on an apparent meteoroid strike. Unless there’s an emergency at the ISS, Roscosmos has deemed the spacecraft unfit to transport humans. The agency will launch another Soyuz craft later this month to bring Petelin and Prokopyev, as well as NASA astronaut Frank Rubio, back to Earth.
Ars Technica’s Eric Berger points out, the Progress incident raises doubts about whether Soyuz MS-22 was actually hit by a micrometeorite. Russia never released images of the impact, and the country’s space program has a history of recent issues. In 2021, for instance, Roscosmos blamed a software bug on the Nauka misfiring that temporarily moved the ISS out of its usual orientation.
Russia will send a ‘rescue’ spacecraft to the ISS following leak
Russia is prepping a ‘rescue’ mission following a coolant leak on a Soyuz capsule docked with the International Space Station. NASA said in a media briefing that Russia’s Roscosmos agency will send an empty Soyuz to the station on February 20th as a replacement for the damaged spacecraft. The vehicle was originally supposed to launch in March.
The leaking capsule is expected to return to Earth without a crew sometime in March. It will still carry experiments and other cargo. Cosmonauts Dmitriy Petelin and Sergey Prokopyev, as well as NASA astronaut Frank Rubio, will now remain in orbit for several months longer rather than departing in March as planned.
The affected craft started spraying particles December 14th. The ISS team quickly noticed that an external radiator cooling loop was to blame, and investigators later determined that a micrometeoroid struck the radiator. Roscosmos soon decided the Soyuz was too dangerous to use for a standard crew return. Temperatures would have climbed past 100F on reentry, threatening both occupants and computer equipment. An in-space repair would be impractical as the procedure would be too difficult, according to the agency’s Sergei Krikalev.
The ISS crew is still prepared to use the broken Soyuz to evacuate in an emergency. However, that’s not ideal when three of the seven people aboard the ISS would likely have to accept elevated risks to come home. A SpaceX Crew Dragon capsule is also docked, but it normally only takes four occupants. NASA’s ISS program head Joel Montalbano said at the briefing that there had been talks with SpaceX to see if one of the Soyuz passengers could travel aboard the Crew Dragon if necessary.
Relations between NASA and Roscomos are strained following Russia’s invasion of Ukraine. Russia said last summer that it would leave the ISS after 2024 to work on its own space station, and the US has been preparing for a possible Russian withdrawal since 2021. However, the capsule leak has effectively forced the two to work closely together — if only briefly.
Russia plans to launch new Soyuz spacecraft to replace a leaky one docked at the ISS
A Russian Soyuz spacecraft docked to the International Space Station (ISS) began leaking coolant early last month, leading to concerns about whether the vehicle would be safe to transport ISS crew members back to Earth.
NASA and Russian space agency Roscosmos have now announced they will be sending a replacement spacecraft for NASA astronaut Frank Rubio and Roscosmos cosmonauts Sergey Prokopyev and Dmitry Petelin in which to travel home. A SpaceX Crew Dragon is also available as a contingency option should it be required.
Roscosmos will send a replacement Soyuz called MS-23 to the ISS, launching on February 20th so it can be used to return the astronauts to Earth. This mission had been scheduled to launch in March carrying new crew…