Questions tagged [iss]

Questions about the International Space Station, a habitable man-made low Earth orbit satellite whose first component was launched in 1998 and used to conduct experiments for a wide variety of research fields in a microgravity environment.

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480 views

Have there ever been any incidents where something valuable was unintentionally throw out with the trash?

In "What do astronauts do with their trash on the ISS?", a commentator asked the title question and was encouraged to make it a new question, but apparently never did. The linked question is ...
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What paper size do they use on the International Space Station?

We know they have at least one printer on the ISS – that's NASA-supplied so it would be in the US Orbital Segment. Presumably there is a printer in the Russian Orbital Segment as well. (Mir had a ...
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How much does the ISS "banana" or flex under the constantly changing conditions of solar heating?

This answer to Do antennae on the ISS have to constantly move to maintain data links? discusses some of the challenges precisely pointing an antenna mounted to the ISS exterior. While the ISSs orbit ...
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Has the ISS ever "flown upside down"? Has the cupola ever "looked up"?

For a spacecraft in low Earth orbit let's call the zenith direction (vector away from Earth) "up". For most of its life I think the ISS has orbited with it's "up side" pointed &...
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How long could the ISS function if removed from Earth orbit?

Suppose the ISS were instantaneously moved to the opposite side of the Sun from Earth - how long would it continue to function? Are there any systems aboard that depend on passing behind the planet ...
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Did CNSA astronaut Zhai Zhigang see the ISS during an EVA?

This answer to Has an astronaut ever seen another object in LEO pass by that wasn't mission-related? says: The encounter happened at longer distances ($\sim47\;km$) and the Shenzhou-7 is smaller than ...
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How does European jurisdiction in the ISS works?

This answer notes that participant nations have jurisdiction over their modules. So in a US module, you are in US jurisdiction, etc. Which means that in an European module, you are in European ...
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What's the shiny triangular feature on this Progress vehicle?

Picture from here What's the shiny, slightly curved triangular plate with rails above it? A larger version, cropped from here, thanks to a comment by ohsin.
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Common Berthing Mechanism Dimensions

I've found detailed information on the International Docking Standard, enough to start work on a detailed CAD of the mechanism. (http://www.internationaldockingstandard.com/download/...
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ISS - Tiangong 2 minimum safe distance

Using the SGP4 propagator, I calculated the minimum distance between ISS and Tiangong-2 for this year. I obtained 12.32 km for 2017-09-27 17:29:36.376 UTC (which ...
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Why is there no common "docking" interface for express rack payloads?

It seems strange to me that given all of the concerns about living space and color palette aboard ISS, the data/power/cooling ports for different mid-deck locker equivalent (MLE) express rack payloads ...
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Can a spacecraft be "too large to dock" to the ISS?

A comment below Is Starship planned to fly directly to the ISS without first stage? Is it even possible? says: to my best knowledge, the Starship will never be near the ISS. it is too large to dock ...
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Did or do space station engineers need to worry about angular momentum stored in circulating fluids?

One of the ISS' main uses is to provide a long duration microgravity environment for a wide variety of experiments. For some experiments residual acceleration needs to be much smaller than average. ...
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Duration of SpaceX Demo-2 mission

I've read that the duration of the current SpaceX demo mission to the ISS and back is highly variable. It was originally estimated they could be on-board the ISS from 1 to 4 months, and currently ...
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149 views

How many laptops onboard ISS?

About how many laptops are there on board the ISS? I saw the header image in this article: https://www.nytimes.com/2019/04/11/science/scott-mark-kelly-twins-space-nasa.html?partner=rss&emc=rss and ...
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Is the ISS in danger of the outer radiation belt?

Is the ISS in danger of the outer radiation belt? I know that the ISS is in the low earth orbit and that it briefly passes through the base of the outer RB, but it is actually in danger? How does the ...
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881 views

Did NASA "publish", then "delete" this and other photos of the ISS leak?

A tweet by @NASASpaceflight (Chris B - NSF, "Managing Editor of NASASpaceFlight.com" says: ISS Leak summary: First thought was MMOD strike. Then NASA released pics. Lots of people: "...
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What are the contingency plans for lost ISS attitude control?

Apparently the Russians had a mishap with their new ISS module. The module fired its thrusters after docking and caused attitude control loss The Russian "Nauka" module linked to the space ...
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How does ECOSTRESS measure both temperature and emissivity of the Earth's surface simultaneously? (Science package aboard the ISS)

The This Week at NASA video A U.S. Commercial Spacecraft Departs the Space Station on This Week @NASA – July 2, 2021 includes the following quote: Data from NASA’s Ecosystem Spaceborne Thermal ...
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Is there a publicly available inventory of things sent to the ISS?

I spent some time looking through NASA datasets and news articles, and couldn't find anything, so I'm hoping that someone in the community will know better than I do: I'm trying to understand what the ...
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113 views

How often has the Hitchhiker's Guide to the Galaxy been in space?

I came across an answer saying that a copy of the Hitchhikers Guide to the Galaxy was sent to space in Elon Musks roadster (in 2018). Has the book been in space before that (maybe taken to the ISS by ...
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How much cargo volume is devoted to food

On the ISS resupply missions go up about every 90 days or so. On those resupply missions how much volume and mass are devoted to food for the astronauts? I've found estimates for the mass to be about ...
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How do ISS astronauts keep proficient on capsule procedures in long duration missions?

Before astronauts and cosmonauts go to the ISS they have months of simulator training on Soyuz spacecraft procedures for launch, rendezvous, docking and re-entry. Yet, once they are on the ISS they ...
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ISS DMA vs C&DH?

The Early design of the ISS specified a global Data Management System (DMS) for operations and management of Station software-dependant systems. The DMS was based on ISO/OSI standards for ...
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How frequenty have space walkers been changed based on space suit configuration?

On Friday, March 29, two astronauts were supposed to conduct what would have become the first all female space walk, Christina Koch and Anne McClain. After her first space walk on March 22, Anne ...
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How are the payload limits of robot arms on the space station determined?

I have just been wondering how the payload limits for the arms on the ISS were determined. Any back of the napkin calculations to explain these? In that vein, I could not find any information on the ...
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284 views

What would be needed for ISS to function in lunar orbit?

Not only the Chinese are rather unimpressed by the concept of "Lunar Gateway", which is summed up as a much smaller ISS in the Moon orbit. It made me wonder - wouldn't it be better to move ISS into ...
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120 views

How many ways of communication with ground can ISS crew use?

I'm currently writing fictional story which is happening at ISS and I have so many questions about this topic, but this one is the most important to me. How many possibilities of communication they ...
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344 views

What are the disturbing torques on the ISS?

What are the orders of magnitude of disturbing torques on the ISS itself, preferably split into the following categories, but any numbers (with source) will be useful: Gravity gradient Magnetic Solar ...
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Why would the dual keel space station design have been more stable?

According to the space station Freedom wikipedia page and this reddit thread, a dual keel structure would have been more stable than the final ISS design. Can someone explain why? And if a gravity ...
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Has the psychological impact of social media exposure for astronauts aboard ISS been studied?

Given the "recent" (few years) exposure and access of astronauts/cosmonauts aboard ISS to social media in order to communicate with the general public, I was wondering if the decision to allow them to ...
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Do the ECLSS components aboard ISS deteriorate at the same rate as they would on Earth?

Just what the title states. Wikipedia writes to say about the ECLSS (Environment Control Life Support System) The highest priority for the ECLSS is the ISS atmosphere, but the system also ...
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1answer
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ISS battery "de-orbit" burnup?

In reading these two questions: How many kilograms of nickel particles will be dispersed in Earth's atmosphere by dumping old ISS batteries overboard? and Why does it take so long for ISS garbage ...
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1answer
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Do astronauts on ISS notice Earth's seasons?

Has anyone stationed on the ISS for some months reported noticing the changing seasons on Earth in any way like people on the surface do, subconsciously without needing to look up numbers for anything?...
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Will the International Space Station be able to see the Falcon 9 (Inspiration4 launch)

Will astronauts aboard the International Space Station be able to see any part of the Inspiration4 flight of the Falcon 9 during launch and/or during orbit?
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How many burns does it take to reboost the ISS?

When the International Space Station is given a reboost, how many burns are performed? Is it a Hohmann transfer orbit, with one perigee burn and one apogee burn? Or is it one burn at apogee just to ...
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Why have astronauts had to take Soyuz capsules "out for a spin" on 15 separate occasions? (move from one Soyuz port to another)

NASA News item Space Station Crew to Relocate Soyuz to Make Room for New Crewmates says: Three residents of the International Space Station will take a spin around their orbital neighborhood in the ...
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CBM dimensions for docking rings, auxillary umbilicals, and passage are in both active and passive sides

I am trying to 3D print some models for imagined and actual space craft. I was wondering if anyone was aware of technical drawings or other documents that give shapes and dimensions of the elements of ...
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ISS Life Support Consumable use rate

At what rate does the International Space Station, (ISS), consume life support resources and other consumables? I'm attempting to calculate long term life supoprt requirements for a system based on ...
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Potential catastrophic death on the ISS from mistakes

Other than from decompression and fire, what other ways has NASA or the Russian space program identified unique ways someone on the ISS could die suddenly, in particular from human error with the ...
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What happens between Payload deployment and the ISS docking

When SpaceX is livestreaming their CRS missions they usually end up by separating the payload from the second stage with an altitude at about 200 km. But I am wondering how the payload gets up to the ...
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149 views

Will be there no ISS in 2030s according to current plans in 2019?

While it took about 10 years and 30 missions to assemble the ISS, and its end of life is about mid to end of 2020's, is there any plan to plan for a new ISS? Otherwise, the time window might become ...
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Just how record-setting was the launch-to-docking time of the April-4-2019 Progress resupply mission?

Digital Trend's article 3-plus-hour supply trip from Earth to International Space Station breaks record mentions that this was even faster than the typical "fast-track" Russian launch-to-docking time ...
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Has the monthly average skin temp of the ISS increased during its years in orbit?

Is there a source of monthly average sun-side maximum temperatures during its (ISS) years in orbit?
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ISS mass gain or loss due to meteoroids, solar wind, and other particles?

A few questions about the mass of the ISS (1, 2, 3) have got me thinking about mass change of the ISS due to natural processes. The ISS has quite a large area exposed to space, and is subject to both ...
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What level of radiation protection do electronics on the ISS or in LEO need?

The harsh radiation environment in space requires that electronics on spacecraft be "radiation hardened." However, the radiation environment in LEO is not as intense as say a spacecraft traveling ...
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Are there chances to get a Hubble + ISS Moon transit picture?

I have seen these cool transit pictures where ISS is transiting the moon ISS is transiting the Sun Hubble is transiting the moon I even saw picture of ISS Sun transit during solar Eclipse Tiangong ...
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When docked, do Dragon solar panels contribute to ISS mains power?

What it says on the tin. Does a docked Dragon trunk section contribute to the ISS's batteries? I'm aware it would probably be minimal though due to orientation and occlusion of the panels, and when ...
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When jettisoning heavy objects from the ISS e.g. 2.9 tons of batteries+, how much torque is there on the station? Are corrective actions necessary?

Discussion below this answer to Why does it take so long for ISS garbage to fall out of orbit? addresses the jettisoning of the ~2.9 ton pallet full of used batteries full of nickel and other things. ...
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Does the ISS currently use "night glider mode" as part of its solar array positioning plan?

I've seen several references on the site to a mode of ISS solar array position management called "night glider" where the solar arrays are turned to minimize drag when the ISS is on the ...