时间：2026-09-14 23:47:05 来源：网络整理编辑：百科
NASA astronauts Peggy Whitson and Jack Fischer are preparing for a hastily-scheduled spacewalk to re
NASA astronauts Peggy Whitson and Jack Fischer are preparing for a hastily-scheduled spacewalk to repair a faulty part on the International Space Station (ISS).
The "contingency spacewalk," which will take place on Tuesday morning, is aimed at removing and replacing a part known as the Multiplexer-Demultiplexer (MDM), which failed on Saturday morning. The cause of the failure is not known, NASA said in a blog post on Sunday.
SEE ALSO:Astronauts take epic 200th spacewalk outside the International Space StationWhile this is not an emergency situation — no lives are at risk on the Space Station as a result of the outage — but having backup systems is critical to the operation of the orbiting laboratory. The MDM is used to keep solar arrays, radiators, and other systems functioning properly.
"The other MDM in the truss is functioning perfectly, providing uninterrupted telemetry routing to the station’s systems. The crew has never been in any danger, and the MDM failure, believed to be internal to the box itself, has had no impact on station activities," NASA said.
Whitson, who is the current ISS commander, will replace the failed MDM with a spare unit, while Fischer will install communications antennas on an another station component, which was a leftover to-do item after a May 12 spacewalk.
This will be Commander Whitson’s 10th spacewalk, according to NASA, and will likely move her up into third place for cumulative spacewalking time.
Fischer, by contrast, will be making his second spacewalk when he steps out into the void on Tuesday.
This particular part will be quite familiar to Whitson, since on March 30, she and astronaut Shane Kimbrough conducted a spacewalk to install it, complete with upgraded software, NASA said.
The space agency will air the spacewalk beginning at 6:30 a.m. ET on its website and NASA-TV.
Daughter gives her 1002026-09-14 23:40
More 'Arrested Development' is a terrible idea2026-09-14 23:30
Leaked images show off the next Microsoft Surface Pro2026-09-14 23:10
Careless truck driver gets a healthy dose of instant karma2026-09-14 23:08
Samsung Galaxy Note7 teardown reveals the magic behind the phone's iris scanner2026-09-14 22:45
Prankster who streaked on Eurovision could face 5 years in jail2026-09-14 22:37
The Apple Watch can actually detect a dangerous heart condition2026-09-14 22:34
Driving test that uses only your hearing is totally freaking people out2026-09-14 22:32
Australian football makes history with first LGBT Pride Game2026-09-14 21:30
Uber just launched a brand new app aimed to help truckers2026-09-14 21:07
Singapore rolls out video2026-09-14 23:27
Hillary Clinton Wikipedia page redirected to ‘Mein Kampf’ for 16 hours and no one noticed2026-09-14 23:24
Leaked images show off the next Microsoft Surface Pro2026-09-14 23:12
How to share Google Photos animations to Instagram2026-09-14 23:08
The Weeknd teases new music in Instagram post2026-09-14 22:48
Apple and Amazon: Rivals that are maybe starting to play nice2026-09-14 22:26
PayPal files lawsuit against Pandora for mimicking its 'iconic logo'2026-09-14 21:37
560 million reasons to change your passwords right now2026-09-14 21:33
Ivanka Trump's unpaid interns share cringeworthy financial advice2026-09-14 21:23
Apple's first store in Southeast Asia is here, and this is what it looks like2026-09-14 21:21
