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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6
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3answers
618 views

Why such a large gap between ISS construction and inhabitation?

I was studying this NASA infographic, and noticed something interesting on the timeline portion: It looks like the station was originally assembled in late '98, while the 'first crew' didn't arrive ...
11
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1answer
548 views

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 ...
9
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1answer
364 views

On Mir, Zarya, or Zvezda, do docking ports consume space inside the module?

I have been asking about why Zarya, Zvezda have the number of docking ports they have, and whether more will be needed. This got me thinking about what the inside of the docking module looks like. ...
3
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1answer
456 views

Why did Zarya (FGB) come with a single docking port?

Initially, the Russians did not wish to launch the FGB (Functional Block), now named Zarya, which was the first ISS component launched. But the US wanted it, so they could launch a US component sooner....
9
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1answer
467 views

Why were the docking ports removed from Zvezda? (Service Module)

Zvezda, the third ISS module, (I think it was Zarya (FGB), Node 1, and then Zvezda) known as the Service Module was actually built as a spare for Mir and was originally to be the core of Mir-2. But ...
3
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0answers
118 views

What is the temperature inside the International Space Station? [duplicate]

What is the temperature inside the ISS? How is the temperature regulated? I have seen a few clips of the ISS and the crew was wearing just T-shirts and shorts, so the temperature must be normal.
12
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1answer
377 views

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 ...
17
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1answer
1k views

Why are three cosmonauts required to move a Soyuz?

The opening paragraph of this article caught my eye*: Three space station crew members put on spacesuits and boarded their Soyuz spacecraft Friday for a short trip to relocate the capsule to a new ...
11
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1answer
2k views

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 ...
9
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1answer
2k views

What would happened if the ISS was depressurized while astronauts were sheltering?

The International Space Station tries to maneuver to avoid debris, but sometimes (and it has actually happened) they discover something that could hit them too late to move, so they shelter in Soyuz ...
23
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2answers
22k views

Air temperature and humidity inside the ISS

The International Space Station being an artificial habitat for humans; it seems reasonable to assume the air temperature, and humidity levels are maintained at well-defined levels. What are the air ...
8
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1answer
147 views

How well did the Orbital Sciences' Cygnus cargo craft perform?

Regardless of the GPS discrepancy, Cygnus completed its mission. How well did it do, and, does SpaceX now have a proper competitor?
9
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1answer
6k views

Price per kg of cargo delivery to ISS

The nice wikipedia comparison table of space station cargo vehicles doesn't provide any hints on the price per kilogram for the cargo delivery to the ISS. As it is usual with price per kilogram ...
10
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1answer
633 views

ISS attitude during docking

The ISS is using the Control Moment Gyroscopes to maintain its attitude (the Cupola pointing towards Earth). That means the ISS is slowly rotating with respect to distant stars. What happens during ...
7
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1answer
230 views

What is the exercise regimen under the SPRINT program?

NASA says (emphasis mine) Current exercise countermeasures on the International Space Station (ISS) are insufficient to prevent muscle atrophy, cardiovascular deconditioning and bone loss ...
30
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1answer
2k views

How is the ISS equipped to deal with the outbreak of a contagion?

Suppose one of the astronauts was a carrier for a disease that did not show up in the medical testing prior to flying up to the ISS. How would the outbreak of this contagion be dealt with?
17
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2answers
1k views

Do astronauts aboard the International Space Station (ISS) actually use their legs?

The European Space Agency writes to say ◾The applicant must have the normal range of motion and functionality in all joints. Historically, IMHO, astronauts came from a flight/test-pilot background....
21
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2answers
2k views

What is the procedure if communication with the ISS is lost for an extended period?

Between ground control and the ISS there is the occasional short communications loss which they are obviously able to deal with, but is there a procedure to follow if the communication is lost for ...
61
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3answers
7k views

Is there no physical security in space, other than being in space?

I saw Gravity the other day and while visually and emotionally compelling, and besides the liberties taken with orbits, something else struck me as unrealistic, but I'm not sure if it is or isn't:...
39
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1answer
6k views

What would happen if a mutiny occurred on the International Space Station?

Historically, mutiny has often occurred in close-quarter situations. While the International Space Station (ISS) is not a military operation, the term mutiny is often used to refer any sort of ...
7
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1answer
210 views

Will Earth, ISS, or Tiangong be the first habitat closest to Juno during Earth Flyby 2013?

Just a fun question (+: Juno is approaching Earth for a gravity assist on her way to Jupiter. Her approach will bring her, at the nearest point, a mere 559KM above Earth's surface. ISS orbits just ...
8
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4answers
370 views

Does GPS work at ISS?

I've recently seen movie Gravity. The protagonist detaches from the shuttle and is hurled into space. The mission commander then asks her for GPS coordinates. This happenned while they were fixing ...
10
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2answers
857 views

Time to prepare for EVA out of ISS

How much time is needed to an astronaut on ISS to prepare herself for an EVA? Is this time so much different from time needed during Apollo missions?
7
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1answer
1k views

Why is the Pirs docking module being discarded?

According to a ISS operations/launch manifest on May 2, 2014 the Progress docked to Pirs, will undock, with Pirs attached to deorbit it. ...
20
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2answers
5k views

What is the cost of keeping the ISS in orbit

The plan for the ISS upon decomissioning is to deorbit the structure and let it fall into the ocean. I get that we do not want extra debris in orbit but I would think that leaving the structure in ...
26
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2answers
8k views

Will the ISS need more docking ports?

Currently the ISS has two basic segments, the Russian and US sides. The Russian side has 4 docking ports. Usually occupied by 2 Soyuz, 1 or 2 Progress freighters or an ESA ATV vehicle. You can see ...
10
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1answer
388 views

How much heat did the Sabatier hardware add to the ISS heat profile?

A sort-of follow-up to Why does the International Space Station produce so much methane? In 2010 Sabatier hardware was integrated into the regenerative environment control. The Sabatier hardware ...
8
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1answer
169 views

What are the criteria to select plants for study in space?

Me? I like roast aubergines cooked the way Mum makes it with mashed potatoes deep-fried, omelette, and roti. If I travel in space that would be the staple in my tiffin. In my on-board farm would loom ...
14
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1answer
1k views

Where should I look in ISS to find mouldy food?

Food is ubiquitous. All organisms known so far need food, and it is commonly believed all organisms unknown need it to. Size matters not - Eating is. Consumption continues ad infinitum. Failure to ...
8
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2answers
654 views

Could Magnetorquers be used on the ISS?

The way that the ISS manages it's attitude now is to use a set of reaction wheels for primary control, and occasionally firing small thrusters to allow the wheels to despin themselves. This isn't ...
8
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2answers
8k views

What's the maximum amount of time the ISS can go between resupply runs?

Typically a cadence of one resupply mission every couple months is maintained. If this cadence were to be interrupted for whatever reason, how long could, say, the current crew size of three members ...
8
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1answer
402 views

Cargo delivery from the ISS to Tiangong

Consider I have a 10 kg object I want to deliver from the ISS to Tiangong-1 station. The object can not go through the land and launch again cycle. Can any of the present day spacecrafts do the ...
5
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2answers
2k views

How would a centrifuge module's berthing system work on the ISS?

Although it's not very likely to be built, the idea of a centrifuge module attached to the International Space Station is taken seriously, and at least two have been proposed. I have in mind the ...
27
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1answer
11k views

What are the procedures aboard the ISS in the eventuality of a loss of a crew member?

So far, all the space exploration related events that resulted in Loss of Crew (LOC) took a complete crew, and as far as we're aware, no accident in space that resulted in loss of human life, be it ...
19
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1answer
15k views

Does the orbit of the ISS decay?

Does the orbit of the ISS decay? I don't know much about the ISS, but I heard some rumors. The rumor I heard was that there is a very, very tiny atmosphere at the ISS orbit.
12
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3answers
3k views

is it possible to use mechanical pencil instead of space pen in ISS?

Is it possible to use mechanical pencil instead of space pen and pencil in International Space Station ?
18
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2answers
2k views

Do astronauts on board the ISS have a backup spacesuit?

Do astronauts on the International Space Station have a backup spacesuit with them so that they could use it in case of any malfunction with one of the spacesuits? If so, how many spacesuits does ...
12
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1answer
1k views

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?
23
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1answer
26k views

What kind of laptops do ISS astronauts use?

In many videos of the ISS, you can see tethered laptops all over the place. Presumably these are heavily customised for space. What kinds of customisation do they need? Are they off-the-shelf laptops ...
11
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3answers
2k views

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 ...
13
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1answer
1k views

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 ...
19
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1answer
7k views

Do ISS astronauts have to be conversant in both English and Russian?

I've noticed that some of the American astronauts on the ISS can speak (at least a smattering of) Russian and similarly, some of the Russian cosmonauts are fluent in English. Is such bilinguality a ...
8
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1answer
580 views

What is the biggest number of astronauts in EVA at the same time ever reached in space history?

At present days, it's common to have two astronauts/cosmonauts in EVA at the same time during ISS maintenance (or experiments or when expanding the station). But there was a time when three or more ...
23
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3answers
2k views

How often are ISS computers (MDMs) replaced?

The electronic "heart" of the International Space Station are the Multiplexers-Demultiplexers (MDMs) located within & outside the pressurized modules. How often are they replaced? (An ideal ...
9
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2answers
2k views

How does the ISS adjust its solar panels?

Solar panels must be always exposed in the direction of sun to produce maximum power. Since the ISS orbits the Earth, if the panels are fixed they will not produce maximum power (often fluctuating). ...
8
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2answers
451 views

Could waste methane be recycled as propellant on the ISS?

Under standard condition methane burns with oxygen in stoichiometric ratio of 1:2 to liberate 891 kJ/mol of energy. Why is the ISS not making use of the methane, which is expelled as waste instead? ...
10
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1answer
496 views

Plumbing work of ISS?

On Earth (under the influence of gravity) a horizontal tube in which water is flowing may form a layer of air at the top of the tube (since less denser than water). But on the ISS (which experiences ...
16
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3answers
364 views

Is there a pre-published time that astronauts on the ISS will be available on Ham Radio?

The International Space Station has a Ham Radio station, and I've heard that the station frequently makes contact with people on the ground. I've seen the crew timelines, but they only publish what ...
15
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1answer
18k views

How are the astronauts in the ISS protected from solar flares?

The Sun emits electromagnetic radiation which may consist of UV, IR, X-rays and also the charge particles that are emitted from the sun which are harmful to humans. But during intense solar flares it ...
21
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1answer
4k views

How is the International Space Station protected against orbital debris?

ISS is at an altitude of about 400 km (approximately). But there will be some of space debris at that altitude (since some of the space debris orbits decay over time). So the debris has a probability ...