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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2
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1answer
244 views

How much payload, could a Soyuz return, without crew?

With the sad demise of the US Space Transportation System (Colloquially known as the "Space Shuttle") return of payload from orbit is very limited. Currently the SpaceX Dragon can return the most ...
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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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What language is most commonly spoken on the ISS?

It is clear from the answer to this question that all astro- or cosmonauts need to study English or Russian, whichever is not their native tongue. But as a practical matter, what language prevails for ...
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1answer
208 views

How will BEAM be deorbited?

Almost all the articles I’ve read about BEAM say something like: “At the end of BEAM's mission, it will be removed from the ISS and burn up during reentry” Source: Wikipedia. But I can’t find ...
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1answer
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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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883 views

One year Mission: Using data from Valeri Polyakov?

NASA One Year Mission will send two people to ISS for one year to help us to get closer to Mars Valeri Polyakov Is current record holder for longest space flight. So, there is one of most obvious ...
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1answer
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Why is there a pregnancy test kit on the ISS?

A comment by Organic Marble on the question Is it possible to get pregnant through natural means in space? includes a link to PREGNANCY TEST (ISS MED/3A - ALL/FIN) which seems to indicate there is a ...
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Is there any other reason to split ISS to Russian and NASA side than pure logical?

While browsing this site, I saw several references to "Russian side of ISS" and several questions arised in my head. The root question is: Is there any other reason to split ISS to Russian and NASA ...
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1answer
277 views

Will Soyuz TMA-16M have the most experienced crew?

I was looking at the names of the crew for Soyuz TMA-16M (for the year long expedition) and I was thinking "wow that's an experienced crew!". I looked up their combined experience and it shows as: ...
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4answers
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Why is NASA planning to deorbit the ISS instead of reusing its newer modules, like the Russians will?

I was reading about Russia's plans to detach their modules from the ISS before its deorbit and use them to begin a new space station. The version I read said Zvezda (DOS-8) and Poisk (MRM-2) are ...
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Any “what if” plans for space programs?

I assume that all space programs, manned and unmanned, have many "what if" plans for situations that might happen. For example, on the ISS they had fire alarm and evacuated to the Russian side. Are ...
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1answer
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Could the space shuttle be permanently left in orbit as a space station?

Could the space shuttles have been left in space and used as temporarily visited space stations? One could put a modified spacehab in the cargo bay, with solar panels and with which the Soyuz/Dragon ...
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660 views

Power requirements for zapping debris with lasers from ISS

My understanding is that the ISS provides 75-90 kWatts of power, so enough power for a 1 second Megawatt pulse for zapping debris in about 15 seconds. Question is: is this right, have I over looked ...
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Why does the interior of the ISS appear so disorganized?

I have noticed that interior of the ISS appears to be very disorganized. Let me clarify what I mean by that. I grew up watching Star Trek, and the Enterprise was the reference of clean space-faring ...
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Why do ISS astronauts use lower quality microphones for official radio communication than for PR events?

In the first seconds of this video you can see/hear ISS astronaut Samantha Cristoforetti prepare for a PR event: During the preparation she uses two different ...
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2answers
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How are EVA's in LEO affected by being at the night side of Earth?

Orbital periods in LEO are quite short, about 92 minutes for the ISS. So every other almost 46 minutes it is in Earth's shadow. Not only is it then out of direct sunlight, I suppose that the night ...
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873 views

Could the ISS be propelled to Mars?

As the ISS has shown the ability for human habitation for extended periods, might we be able to add a propulsion unit to the ISS that would be capable of providing delta-v to send ISS to a martian ...
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1answer
413 views

How many man-hours are spent on International Space Station's maintenance?

What is the cost, in man-hours per month, of ISS maintenance? I am looking for the actual time, not the dollar figure. What the governments of the world pay versus what the private sector will be able ...
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1answer
193 views

Will the International Space Station's propulsion system be changed to electric propulsion?

I know the systems being used are very new and being used in very small satellites, but if a system could be scaled up in the near future, that would certainly help keep the station afloat. Thoughts?
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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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221 views

Would measuring the Infrared radiation output of the sun be difficult, due to the output of other sources (Earth) interfering with the results?

If, hypothetically, there was to be an experiment that would look for solar activity induced increases in infrared radiation on the International Space Station, would the infrared radiation produced ...
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What are the masses of the docking / berthing mechanisms used by the ISS?

I have been unable to find any information on the masses of the docking / berthing mechanisms used by the ISS. What are the masses of the APAS-95, Active / Passive Common Berthing Mechanism, and ...
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1answer
578 views

How serious is a contagion in space flight?

Today I was playing Alien: Isolation and saw a poster regarding lice and how you ought to get checked to reduce the risk of spreading it. (I give you this context to let you know that I am generally ...
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Why are low earth orbit satellites not visible from the same place all the time?

I was wondering why low earth orbit satellites can not be seen from the same place all the time? For instance, the ISS passes over my house twice in a month. Why does it happen only two times?
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How does one estimate the time until ISS enters/leaves darkness with available data [closed]

I'd like know how sites like helloearth.us or satflare.com/iss calculate the time until the ISS enters/leaves darkness (sunrise/sunset).
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1answer
682 views

Could the ISS pressurized elements withstand a full depressurization?

In case of necessity -- for example in case of fire or contamination -- is it possible for any pressurized element of the ISS to be exposed to vacuum? If all compartments and airlocks were to be ...
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Will the accelerometer, gyroscope and magnetometer in a smartphone work on the ISS?

Curious as to how gyroscopic sensors, accelerometers and also magnetometers that are internal to the Nexus S smartphone on-board the ISS would work in a zero gravity environment.
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Artificial Gravity on board the ISS and its derivatives

Was the implementation of artificial gravity ever seriously considered for use on board the ISS and its derivatives? If not, why?
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Current ISS configuration (Dec. 2014)?

Is this the current configuration of the ISS (ignoring visiting vehicles)? (source: wikipedia) STS-134/UL6 delivered the last elements. Nauka still to launch. (source: Nasa) (source: space.com)
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Is there drag inside a Space craft?

After watching Chris Hadfield make a Space Burrito, I saw his bits and pieces floating away here and there. Inside the ISS, and any other manned craft, there is Oxygen (and other gases) which is ...
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1answer
728 views

What module(s) on the ISS do the Soyuz dock to?

I've started to notice more and more as I study the ISS, that I can only ever find pictures of one Soyuz docked. Where is the other one? Lets say their sending up a crew of 6 for an expedition. A ...
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1answer
233 views

Robots on board the ISS: Expectations and results?

In the continuation of "are there any humanoid robots on board the ISS?"... Do we have more information, further than marketing, e.g: Do we have firm plans for cognitive robots on board the ISS? If ...
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Reasons for using a bi-elliptic transfer for Soyuz-ISS rendezvous

According to the ESA movie Soyuz rendezvous and docking explained, Soyuz uses a bi-elliptic transfer to move from the phasing orbit to the ISS orbit. Why is this more complex transfer used instead of ...
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ISS: time between two successive observations and orbital period

Just had 2 evenings when the ISS was visible twice on successive passes. Times for appearance were 94 minutes apart. If I use the quoted value of g at 400 km above the earth of 0.89m/s/s I can ...
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559 views

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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678 views

Do the ISS crew also study Russian language?

I was watching this video and I realized that all the instruments on the Soyuz spacecraft is in Russian. So how can the non-Russian crew use those instruments? Do they also study Russian before the ...
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465 views

What are the challenges and utility of a Lunar Orbital Station?

With experience of the ISS and hopefully soon the Orion and SLS, it seems to me that a Lunar Orbital Station (LOS) could be the next step. What are the main challenges of building and running a LOS ...
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163 views

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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1answer
442 views

Will the CST-100 recharge its batteries?

Since the CTS-100 uses lithium-ion batteries to supply its electrical power, and lithium-ion batteries self-discharge over time, will the CST-100 need to recharge its batteries at the ISS? If so how ...
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1answer
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What would be required for Orion to ferry astronauts to the ISS?

This mission profile seems like a no-brainer to me, but I don't recall seeing it mentioned in Orion coverage. I know this may have more to do with politics than anything else, but I'm more interested ...
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What is the accuracy / uncertainty of Two Line Elements (TLEs)?

I use TLE sets supplied on this website to find the future position of satellites (well usually just the ISS) using the SGP4 propagation method implemented in C++. My question is: What is the ...
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How is unpressurized cargo useful at the ISS?

The Dragon is designed to be able to bring unpressurized cargo to the ISS. How can such cargo be brought on board the ISS? What uses can such unpressurized cargo have?
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1answer
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What are the tradeoffs of docking multiple small launches in orbit vs a single heavy launch?

What are the benefits of having a heavy lift launch vehicle, compared to using several smaller launches and assemble the spacecraft in orbit? There must've been more than a hundred successful ...
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1answer
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What is the theoretical life of the ISS?

There still seems to be uncertainty about how long the ISS will remain flying, mainly due to political wrangling and budgetary concerns. Even the longest plans state that operations are not expected ...
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1answer
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Does atmospheric drag or reboosting maneouvers affect the integrity of microgravity experiments aboard ISS?

ISS is in low Earth orbit, and as such, its orbital progress is gradually slowed by atmospheric drag and consequently requires occasional reboosts. It also has to be occasionally maneouvered to avoid ...
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511 views

What lessons in Space Station design have come out of the ISS?

The Soviets/Russian had a lot of station experience (Salyut, Almaz, Mir, and then ISS) that was used to build better and better stations. The US did Skylab and Shuttle/Spacelab/SpaceHab, and learned ...
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How fast can the crew evacuate the ISS? (ACRV)

An important advantage of having a space station in LEO, as opposed to a space ship orbiting another celestial object, is allegedly that the crew can be saved by a quick return to Earth. But what ...
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How similar are Soyuz and Progress?

Superficially the Soyuz and Progress spacecraft look very similar: (Soyuz TMA-7) (Progress M-52) So it would be easy to imagine that they share a common service module and/or orbital module. But ...
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Progress M-25M launched because of Antares?

Was Progress M-25M launched in response to Antares' catastrophic failure or were they 2 different launches, both planned to reach the ISS "separately"?
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What is the cost of taking something down from the ISS?

Launching instruments into orbit is expensive. When a spacecraft in orbit stops functioning, fixing it is normally not an option; nor will it be possible to retrieve the instrument for diagnosis. If ...