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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2answers
4k views

Earth angular size looking from the ISS

Imagine you're, well, actually on the ISS so you're 395 km up. We've all seen many photos roughly like this... however this can be deceptive; They might be all fisheye lenses. A great many of these ...
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780 views

What is in the care packages sent to crew members of the International Space Station?

Each crew member of the ISS gets care packages on cargo flights. In a video tour of the station, it was mentioned that each crew member has a stash of favorite food just for them. It is easy to see ...
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Where does the clothing for the crew of the International Space Station come from?

This post talked about the standardized clothing list each astronaut or cosmonaut has when on the ISS. It is specified carefully in consideration of the fact clothing can't be washed, so it is used ...
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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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How does delaying Soyuz TMA-15M crew return help with ISS schedule slip due to failed Progress M-27M resupply vehicle?

After the failed Progress M-27M / Progress 59 resupply mission in late April 2015, Roscosmos and NASA have been working on ISS schedule changes to accommodate loss of supplies to the station, while an ...
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1answer
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How often does ISS require re-boosting to higher orbit?

I know that ISS, being in low Earth orbit, requires regular boosts. But I can't seem to find information on how often does this happen. Is it done during each resupply mission, only during some of ...
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Does the cargo type to ISS differ between different carrier spacecrafts such as Progress, Dragon, HTV, Cygnus?

Do different cargo carriers to the ISS generally have different profiles for their cargo composition, or is it basically just the number of tons that matter? Especially with respect to cargo which is ...
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What are the regulations about ISS access for research?

Are there any laws regulating access to the International Space Station for an Indian company, for research such as microgravity tests?
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Why aren't the ISS's nor Space Shuttle's radiators black?

As we know, from a surprising corollary to Kirchhoff's law of thermal radiation, just as darker* objects absorb more light (and therefore energy), darker objects also radiate more light (at lower ...
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1answer
436 views

What is the longest time that a mammal has spent in microgravity?

The ISS has had crew since the year 2000. Do the health issues with microgravity keep compounding, or do they stabilize after a few years and maybe even diminish? I suppose the animal needs to be a ...
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What is the purpose of the rotating dish antenna on the ISS

I just saw some footage of the ISS in which a dish antenna could be seen, constantly rotating. The dish looked more-or-less parabolic, meaning that it is presumably sending/receiving along a fairly ...
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How much payload could a manned Dragon return, if unmanned?

The first mission to the ISS by Dragonrider (and CST-100) is expected to be unmanned. That means when it returns, it will have ability to return a full cargo load. Of course, ISS payloads are often ...
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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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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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876 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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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 ...