The scheduled return of three astronauts on a Soyuz spacecraft has been delayed tonight because of a malfunction in the docking port.
Update: The return to Earth has definitely been canceled for tonight. The problem was caused when latches on the Soyuz, designed to secure it safely to ISS, refused to release on command. As of 12:43 am the plan was to recycle and try to land on Friday evening.
NASA has now officially extended Boeing’s contract to operate the International Space Station through 2015.
Engineers are reviewing the life expectancy of the International Space Station, in light of the desire of politicians to keep it operating through the 2020s. Intriguing quote:
Airlines and airplane contractors commonly inspect aircraft for such fractures, but with the space station out of reach more than 200 miles up, engineers rely on complex models to predict their growth in orbit.
NASA managers have decided to defer that spacewalk to finish up the work items leftover from the spacewalks to repair the station’s cooling system, leaving the work to the space shuttle astronauts during the upcoming the November shuttle flight.
Japan and Europe are both considering an upgrade to their unmanned cargo carriers so that each can also return cargo from ISS.
The cooling system on ISS is finally running normally again after the three spacewalks to replace the system’s failed pump.
Though this only confirms what the Russians learned on Mir, scientists have determined that long periods in weightlessness cause a significant loss in muscle strength. More research like this — to both study the problem as well as possibly solve it — is exactly what we need to do on ISS. Key quote:
Damage caused to the tissue is such that it is equivalent to a 30- to 50-year-old crew member’s muscles deteriorating to that of an 80-year-old. Despite in-flight exercise, the report warns that the destructive effects of extended weightlessness to skeletal muscle poses a significant safety risk for future manned missions to Mars and further afield.
This space.com report by Tariq Malik gives a good overview of today’s successful spacewalk on ISS.
The spacewalk on ISS is not quite finished, but the astronauts are wrapping up after successfully installing the replacement pump to the cooling system. Ground controllers have tested the system and it appears to be working.
Boeing is hoping to do the first test flight of its privately developed cargo/crew capsule by late in 2013.
NASA managers have delayed by one day the next spacewalk to repair ISS’s cooling system. Now set for August 16, this spacewalk will install the new pump. The date of a fourth spacewalk to finish up the work is as yet unscheduled.
The Japanese are considering upgrades to their unmanned HTV freighter that carries cargo to ISS. The upgrades would allow HTV to return large cargo to Earth, as well as possibly become a manned vehicle.
