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24 votes

How much does air on the ISS cost?

The current cost of resupplying the ISS is around $80,000 per kg, although this price has varied over the years. (references) The pressurized volume of air on the ISS is 1,005.0 $m^3$ (ref). As the ...
phil1008's user avatar
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16 votes
Accepted

Will there be another joint International Space Station (ISS) after the current is retired?

As far as I'm aware there are no plans to build another "ISS". Instead NASA and ESA are helping to fund various commercial space stations: Axiom Orbital Segment Orbital Reef Starlab Haven-1
Alan Birtles's user avatar
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8 votes

Will there be another joint International Space Station (ISS) after the current is retired?

Probably the first question is what a future International Space Station is trying to do. The current ISS exists for many reasons, and the result is at best described as functional with many ...
GremlinWranger's user avatar
7 votes

Why are there so many visible cables on the exterior of the ISS?

The major reason for routing them outside is to limit the number of drag-throughs in hatches. In the event the ISS crew needs to isolate a module in an emergency, they need to be able to do so quickly....
Doresoom's user avatar
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6 votes
Accepted

A cancelled EVA for expedition 70?

The EVA has not exactly been cancelled but apparently postponed to Expedition 71. According to a January 25th, 2024 article about Expedition 71 on AmericaSpace: Three Russian spacewalks are planned ...
Steve Pemberton's user avatar
5 votes

Will there be another joint International Space Station (ISS) after the current is retired?

NASA and other partner space agencies are looking beyond LEO for the next collaborative space station. The Lunar Gateway Program is developing a space station that will orbit the moon in support of ...
Doresoom's user avatar
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4 votes

How much time does the ISS require in "non value adding activities"?

The NASA ISS payload utilization (science experiments) for FY 2019 was 967 hours, according to the ISS National Laboratory. EDIT: My previous conclusion seemed low on the payloads utilization numbers. ...
Doresoom's user avatar
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4 votes

Whats wrong with the camera in recent ISS videos?

It is indeed radiation damage. NASA has a short writeup of it here. They speculate a variety of factors affect the rate of dead pixels: Imager size Pixels per imager Shape and size of individual ...
Doresoom's user avatar
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4 votes
Accepted

What are the MDM's on the ISS, and how many different kinds are there?

There are thee tiers of MDMs on the ISS: Tier 1 C&C (Command and Control) MDMs Three fully redundant MDMs that are always powered on, with one operating as primary. Processes commands sent form ...
Doresoom's user avatar
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4 votes

Was this printer shown the ISS in 2015 built specially to work in microgravity?

The other answers covered what model of printer, but I have insight into its ease of use: During Expedition 51 in 2017, the crew reported difficulties getting the printer to function properly. It ...
Doresoom's user avatar
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3 votes

Do astronauts aboard ISS always follow orders?

I only experienced one instance in the three years I worked as an ISS flight controller where a crew member publicly balked at the planned schedule. They had just completed a demanding EVA, and the ...
Doresoom's user avatar
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3 votes

How closely can ground control monitor ISS astronauts?

Video There are interior Canon XF305 (and now XF-705 as of 2021) camcorders all throughout the USOS portion of Station, but the crew could manually turn them off, unplug them, place the lens cap on ...
Doresoom's user avatar
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2 votes

Post-shuttle, "Have any animals that have been studied onboard the ISS come back alive?"

Other answers focused on Rodent Research, which is long running series of experiments which often have live rodents returned to Earth. One such experiment was Rodent Research 6. Other examples include:...
Doresoom's user avatar
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1 vote

Price per kg of cargo delivery to ISS

I studied this very topic for the Space Shuttle program and NASA's Commercial Resupply Services and included my findings in a paper published last year. Sending cargo and crew to the ISS involves ...
phil1008's user avatar
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