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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What are the windows on the Russian segement of the ISS made of?

Presumably the various windows on the different modules of the ISS are consistent on the different segments of the ISS. What are the windows on the Russian Segment made out of? Do they have special ...
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What is the cause of discoloration along the edges of the Quest Joint Airlock thermal cover?

I've noticed this discoloration / stains / burn marks along the edges of the Quest Joint Airlock thermal cover on the hatch before, but they seem even more pronounced and contrasting with the cover's ...
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When a new module is added to the ISS, do they still do the “Shake” test?

I recall reading, that when Mir would get a new module added, after it was docked, a cosmonaut would stand in, feet on one wall, hands on the other, and try to shake it, to ensure the docking seal was ...
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Do ISS astronauts occasionally let the sunshine in for a natural light “fix”?

I looked for images of a nice sunlit ISS crew cabin interior and predictably didn't have much luck. Most hits were mentions of the sunlight the astronaut would leave behind on earth, or enjoy again ...
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Does ISS stop rotation for docking?

A question from 3 years ago got an answer that would be a great answer to a different question (and concluded with a comment that more would be posted later.) Let me re-ask, making the question ...
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How does an astronaut pack for the ISS?

This article talks about a 'Personal Preference Kit;, a bag measuring 5" x 8" x 2", that could weigh no more than 1.5 lbs. It was the sole space an astronaut could use for personal items. But it ...
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Decoding Russian ISS telemetry

While the American segment of the ISS has data published on-line (http://spacestationlive.nasa.gov), the same cannot be said about the Russian segment. It is known that telemetry is transmitted to ...
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Were any toxic metals used in the International Space Station?

Have any of the following metals been used in the ISS? Lead: used in some batteries, and in many types of solder. Mercury: used in some batteries, and in tilt switches (which I would expect have no ...
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How do orbital boosts affect the structural integrity of the ISS?

I've become curious of this question since my time on KSP, and searches have not rendered much. In the simulator, building large stations even without the micro atmosphere being simulated, can cause ...
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How feasible would it be to move the ISS to the surface of the Moon to recycle its components in future?

I see it as an awful waste of energy in not only creating the International Space Station (ISS) components, but also in getting them into space to only decommission the station by letting it fall back ...
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Why is there a need for getting rid of ISS trash using the empty ATV and similar vehicles

Why is trash from the ISS sent down in some of the cargo vehicles. Would it not make more sense to dump it overboard in the downward + retrograde direction (as described here) and use reusable cargo ...
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Does ISS follow Earth's rotation?

Is ISS orbiting with or against the rotation of Earth? Is it important in any aspect for the space station?
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What if any US laws apply on the ISS?

This question comes from an answer at Why is there a pregnancy test kit on the ISS? that says "US medical privacy laws" apply on the ISS. These US laws are for the most part addressed at http://www....
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How many spacecraft can dock at the ISS at once?

With CST-100 looking likely to start flying (eventually) and Crew Dragon prepping for a human spaceflight, plus the existing Soyuz program I got to wondering how many craft could be docked at the ISS ...
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Do astronauts on ISS get fresh perishable goods with deliveries?

The usual fare for ISS has very long expiration dates, to last between deliveries, months apart. That, combined with other requirements (no crumbs/powders, no cooking, flatulence-safe etc) ...
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When does the ISS have a loss-of-signal?

The ISS has a camera mounted streaming live video from space (HDEV). From time to time, there is a blue screen visible, which is noted to be during times of "loss of signal". What exactly defines a "...
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Is water on-board space-craft (such as ISS) rationed?

An NIH abstract writes to say A daily water intake of 3.7 L for adult men and 2.7 L for adult women meets the needs of the vast majority of persons. Is water on-board space-craft (such as ISS, ...
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How do astronauts brew tea on ISS and what brewing temperature is common?

Do astronauts add hot water to a packet that contains a bag with real tea leaves or is it dry tea powder? If they use real tea leaves, what would be the water temperature for the brewing? To get the ...
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Do ISS astronauts notice, or experience symptoms of elevated CO2 levels? Do they wear monitors regularly?

A recent (Sept. 2017) news item on the company website of Gas Sensing Solutions Innovative sensor technology assists NASA with vital wearable CO2 monitoring equipment caught my eye. A section of the ...
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How are hatches set up in the common berthing mechanism (CBM)?

I have read about the common berthing mechanism on ISS and how the attachment process works and how the pressure seal is established, and I think I have that part figured out. There is a passive CBM ...
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Melanized fungi on the ISS - are they 'enjoying' the elevated radiation levels there?

The end of this excellent answer lead me to Wikipedia which linked to The blacker the better… especially in Chernobyl and Chernobyl Fungus Feeds On Radiation. One passage in 'blacker the better' ...
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Do astronauts aboard ISS always follow orders?

There have been many documented cases of astronauts not following direct orders during the Skylab and Apollo missions. Some of these have been publicly reprimanded but most have not. Most of the ...
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Are there any humanoid robots on board the ISS?

Are there any humanoid robots on board the International Space Station to help out its astronaut occupants? If not, are there any plans to send humanoid robots to the ISS?
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What kind of biological research does the ISS do?

As per this link, the International Space Station (ISS) continues to provide research in such fields as biology. What kind of biological research is being done on the ISS, considering there is no life ...
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Do astronauts take any pills to battle bone density loss?

Is the effect of micro-gravity on bone structure similar to osteoporosis? If so, do they often take simple pills like calcium or more advance medicine such as ones listed here? Lastly, are they ...
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Does the “Tennis Racket Theorem” apply to the ISS? Does it rotate around its intermediate (unstable) axis?

Wikipedia's Tennis racket theorem begins: The tennis racket theorem or intermediate axis theorem is a result in classical mechanics describing the movement of a rigid body with three distinct ...
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Space Station Battle: Could the Almaz gun depressurize the ISS?

Background The second Soviet Almaz military space station both had and tested an externally-mounted autocannon, specifically a Rikhter R-23 (according to some sources). It had 32 rounds of ...
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Why does SpaceX not label the Dragon capsules externally?

Looking at a great answer to a question about Dragons berthing orientation at the ISS which shows images of the 5 CRS Dragons berthed to the ISS one thing struck me. There looks to be no easy way to ...
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What will be NASA Policy on backup ISS docking/berthing ports, once commercial crew is up and running?

The news that Boeing will bid the CST-100 as a Commercial Resupply Services 2 (CRS-2) vehicle raises a question: will they be using a docking port, to a PMA or berthing to a CBM port? The problem is ...
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What psychological issues do astronauts experience during spaceflight, caused by spaceflight?

What psychological problems or issues do astronauts experience during spaceflight, that are caused by microgravity, background "white noise" or other unusual environments that astronauts in space are ...
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How is Dragon-v2 prepared for being docked for months at ISS?

The Dragon spacecraft is being certified for manned spaceflight. If it's to replace Soyuz, though, it will have to serve as an escape pod for the crew. The current delivery missions are proving its ...
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If all people come home from the ISS for how long would it remain usable?

I assume that if everyone left the ISS, there is a method that can be used to put people back on it. For example to open the “door” from the outside. However how long could the ISS remain ...
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With one out of two Thermal Control Systems on ISS malfunctioning, how long can Loop B keep up with increased load?

International Space Station (ISS) is in trouble again. One of the two Thermal Control System (TCS) loops (Loop A) is malfunctioning due to a troublesome Flow Control Valve (FCV). This is nothing new ...
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Fish in space: what were the results?

I've been interested in the Japanese experiment on the ISS involving raising fish in space, but in all my reading the results seem a bit ambiguous/conflicting (depending on source). What are the ...
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How many airlocks does the ISS have?

In this context, I mean, a way to get out of the station, without depressurizing the entire station. The obvious ones are: Quest airlock on Unity (Node 1). Pirs (DC-1) airlock Does Poisk (DC-2? Or ...
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Has dependent one-carbon metabolic pathway been successfully linked to ocular health of astronauts?

NASA is pretty active in investigating deteriorated vision issues of astronauts that, I guess, are most frequently linked to the loss of intracranial blood pressure due to microgravity with their ...
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Can the ISS be brought to a long term storage orbit using existing NEXT ion engines?

To throw away an investment in space infra-structure the size of the ISS seems an incredible waste. Even if there is only a limited chance of ever using it again, the probability of this happening ...
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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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Why all the loose wires in the ISS? [duplicate]

I took the virtual tour of the ISS - and my first impression was "What a mess!" Okay, I understand any elements should be easy to move; any "decorative" elements like locker doors add unnecessary ...
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How do iPads on the ISS know which way is “up” for their users?

The question What makes smartphones tilt-sensitive? Will they retain this ability in zero-gravity conditions? brought to mind the video of astronaut Steven Swanson's detailed tour of the ISS, in which ...
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What do astronauts do with their trash on the ISS?

Astronauts often stay more than a year on the ISS, they produce trash like any other human. Is there like a limit that they may produce ever day or maybe some measures were put in place to reduce the ...
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Could you take a Cessna from the ISS to Earth?

The shuttle had a empty gross weight of 172,000 lb (78,000 kg), and the only feasible way shedding the 27,724 kilometres (17,227 mi) per hour, of the relative speed of the ISS is Aerobraking. A four ...
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Why was there a miniature bread on the ISS?

In the NASA images and video library there is a image of a miniature bread floating in ISS node 1 (expedition 34 in 2013). Unfortunately I wasn't able to find any information on the experiment or ...
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How often has the ISS been physically vacant (un-manned)?

Currently six great folks are working in the International Space Station (ISS). I am wondering if it is ever vacant and if there's a rule of thumb (magnitude of order of days, an average or anything) ...
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Plans for ISS crew to enter Crew Dragon?

Are there any plans for ISS crew to enter the Dragon V2 while it is docked during the upcoming Crew Dragon Demo 1 mission?
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Why no Iridium-level flares from other satellites?

Wikipedia explains Iridium and other satellite flares very well. The Iridium reflective surfaces are at very particular angles and can flare up to magnitude -9.5, however other satellites don't ...
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Is there a better way for astronauts to bathe?

On the ISS each astronaut gets a packaged wet towel every two days, two dry towels and two washcloths a week, and 3 small packets of moist napkins every two days with which to wash themselves. At the ...
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Why does the ISS points always the same side towards the Earth?

I recently got into a twitter discussion over the ISS attitude. The point of the discussion is the attitude that the ISS mantains while orbiting around the Earth. From my reminescences of Oribital ...
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Could a harpoon-like gun be used by an astronaut to stop drifting away from a ship?

I saw the movie Gravity. Spoiler alert, hover with your mouse over the yellow bar below to reveal a part of the movie's plot: Why can't they have a gun kind-of thing with a string/rope? One end of ...
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What is this instrument on the ISS?

In this image (NASA original source) from the International Space Station. what is the "lightning rod"-like instrument at the end of the mast in the upper right of the photo?

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