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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16
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1answer
819 views

Why is the Pressurized Mating Adapter slanted?

There are three of these on the ISS. One connects the Russian modules to the rest. One was used for docking the shuttles. One... kinda just sits there, with modules that were to be berthed canceled. (...
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3answers
381 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 ...
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3answers
7k views

How do astronauts keep their devices dry?

In these videos astronauts are drinking and playing with water. We can see water droplets floating away to the surroundings. Do these droplets affect the machines in any way? What do astronauts do to ...
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Can X-37B dock with the ISS

X-37 can fly in the same orbit as ISS but can they dock?
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2answers
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Which operating systems is the International Space Station running?

I've seen some of the articles mention that ISS switched from Windows to Linux. But that's just considering the laptops. What OS are the other computers present on ISS running? I would think that e.g. ...
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2answers
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What did I see just before the ISS but on a different trajectory?

I live at 49.99N, 8.57E. Today we had exceptionally clear skies. I was looking out a window towards the South between 7:48pm and 7:52pm local time (central european) when I noticed a strange light ...
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1answer
2k views

Are the EVA suits used in the ISS and in the NBL same or different?

Are the space suits used in the International Space Station (ISS) and in the Neutral Buoyancy Lab (NBL) same or different? They look similar, but they are used in two different media - one in a vacuum ...
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3answers
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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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1answer
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Why are these astronauts green?

The Space.com article Space Station Crew Returns to Earth Tonight: Watch It Live leads with a photo of three astronauts on the ISS that are backlit with bright green light, which can also be seen ...
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1answer
415 views

How precisely do we know mass of the ISS?

Everyone knows that in space, every gram counts. Knowing how much mass an orbital object has is necessary for precise motion calculations. So how precisely do we know the mass of ISS? I'm sure we can ...
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3answers
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Can Dragon, or Dragon V2 be used to boost the ISS orbit?

One of the roles that Progress (and ATV) fulfill at the ISS is station reboost. This works because they can dock at the back of the Zvezda module, and boost inline with the station. I cannot find a ...
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1answer
19k 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 ...
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1answer
3k views

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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292 views

To what extent are the US modules of ISS based on the Spacelab design?

Various sources, for example the Spacelab wikipedia page, report that several modules used in American sector of the ISS are based on the Spacelab legacy. To what extent has its legacy been used? ...
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1answer
914 views

Can a Boeing CST-100 be used to provide station reboost?

In the question: "Can Dragon, or Dragon V2 be used to boost the ISS orbit?" I asked if the Dragon V1/V2 can provide station reboost functionality that is currently provided by the ATV or Progress ...
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1answer
616 views

How many docking/berthing operations can a CBM port tolerate?

Generally the CBM ports were meant to connect new space station nodes together. The nadir port on Harmony (Node 2) has been used for more berthings than any other that I am aware of. As of Jan 2014,...
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1answer
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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 ...
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1answer
794 views

Does having only 3 people on the ISS create workload problems?

There are a couple of quick ways to check the number of people in space, right now there are 3. Usually the ISS has a crew of 6. The launch planned for the other 3 crew was delayed indefinitely due to ...
15
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1answer
847 views

Can astronauts inside ISS hear their crewmates doing EVAs?

I was just watching a video of two astronauts doing an EVA on ISS to install some things. As I saw how they moved around the outside of the ISS using handrails and other things to grab, I was ...
15
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1answer
1k views

How is the space station's interior cleaned?

The ISS is a pretty messy place, as in the image here. I have a cable mess under my desk that quickly traps dust and takes some effort to be cleaned. The ISS is much worse. And it has been crewed ...
15
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1answer
622 views

Why are there advertisements in the Russian ISS flight control room?

I found a photograph of the Russian ISS flight control room: Source: NASA https://commons.wikimedia.org/wiki/File:Russian_ISS_Flight_Control_Room.jpg Below the large screen are several ...
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3answers
12k views

Why aren't the ISS HDEV cameras left on at night?

When watching the ISS HD Earth Viewing Experiment, I realized that they turn the cameras off when the ISS enters night. How often are they turned off when its dark? How come they aren't left on?
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4answers
2k views

Have space station modules already been replaced?

After reading this question, I understand that it is simpler to replace a space station than to repair it in order to continue its activity. All modules in a space station may not have the same ...
14
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1answer
2k views

How does electrical safety system work on ISS?

Is there any possibility that the power consumption is greater than power supply on ISS? What happens (or potentially would happen) if we plug too many electric devices so that ISS couldn't handle it? ...
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4answers
5k views

What happened to the HDEV ISS Experiment? Is it over?

I've been checking on and off for a few weeks now and the offline logo seems to be always there. Is the program over? Is there another website that shows current views? Thanks for your time!
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795 views

Why does the ISS crew wear a dust mask in BEAM?

This video from NASA shows Jeff Williams entering BEAM for the first time. He's wearing a simple dust mask. Why is that? If there is concern about floating particles, wouldn't there be a concern with ...
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1answer
4k views

What is the ISS drag?

ISS constantly loses altitude to air drag and other forces (tidal, electromagnetic). While finding that rate in the sources isn't that hard, with orbital mechanics of altitude loss actually increasing ...
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2answers
2k views

When was the last time 9 people were on the ISS?

Currently (September 4, 2015) there is a complement of 9 people aboard the ISS. This will change a week from now, when 3 of those people return to Earth. When was the last time the ISS had 9 people ...
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3answers
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What is so difficult about the ISS zero propellant maneuver?

Nazareth Bedrossian (from Draper Laboratory) et al. describe the ZPM in this paper. What I want to know is: Why is planning and executing the maneuver so difficult it had not been done before 2007? ...
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1answer
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How long can Crew Dragon stay at ISS?

It appears that the first manned Crew Dragon flight to ISS may be extended due to there being only one US astronaut there. NASA is also trying to determine how long Dragon's first crewed mission ...
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2answers
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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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1answer
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Is this ginormous porthole a permanent feature of the ISS or “just passing through”?

This tweet from Expedition 51/52 astronaut Jack Fischer admires the great view straight down from the ginormous Russian porthole of the Progress cargo vehicle on the ISS. I don't really understand ...
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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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1answer
1k views

How would civilians send snacks to the ISS crew?

Today I saw a video in which ESA astronaut Samantha Cristoforetti teaches us how to make pitas in space, and invites us to try to make them at home. I understand that much of the food on the ISS is ...
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1answer
388 views

Astronaut orientation etiquette

How does the microgravity environment on the ISS change how people interact or converse? Is it polite or common to be oriented the same direction as who you're talking to? Also, when you see new ...
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4answers
11k views

How do astronauts take pictures from outside the ISS?

I've seen multiple images taken from outside the Space Station like this one or this one and even timelapses from far outside showing the solar panels moving over time. Is there a satellite ...
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4answers
514 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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3answers
12k views

What propulsion methods does the ISS use for station-keeping?

The International Space Station is constantly losing orbital energy due to atmospheric drag. How does station-keeping work for the ISS? What sort of propulsion system is used to keep it in the desired ...
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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 ?
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Why couldn't Luca Parmitano just drink that water?

Of course, I am asking about the EVA incident where the Luca's spacesuit malfunctioned and his helmet filled up with water nearly drowning him. I'm really sorry, I am not assuming the mission centre ...
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2k views

What happens differently when ISS is inside this red boundary (Russia & Europe & …)?

The question Why are there advertisements in the Russian ISS flight control room? shows the image below. There is a large red boundary that looks like the boundary of the overlap of several circles ...
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1answer
3k views

What is Earthy controlling in the ISS cupola?

ScienceAlert.com's Astronauts on The Space Station Liked SpaceX's 'Earthy' Toy So Much They Kidnapped It shows a series of photos of Earthy, the new plushy member of the ISS crew. In the photo below ...
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2answers
3k views

How does ISS protect astronauts from Coronal Mass Ejections?

The related question's answer tells about the mitigation procedures for the duration of a 'proton storm'. In particular, The ISS crew did receive a Solar weather warning several times and were ...
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1answer
2k views

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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877 views

Is the Nudelman-Rikhter gun installed on Zvezda module?

By having a gun on board, one can conduct military kinds of experiments. Exploring armoring approaches for spacecraft, warning systems for the personnel, orbital ballistic studies for the multi-body ...
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2answers
4k views

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 ...
13
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1answer
479 views

How much delta-v can be achieved by venting the ISS atmosphere?

A sort-of follow-up to What do the astronauts do whilst the air-lock cycles? The ISS fact-sheet writes to say Pressurized Volume: 32,333 cubic feet (916 cubic meters) Elsewhere on the stack are ...
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1answer
814 views

Are the power systems on the US and Russian segments of the ISS similar/compatible?

Clearly there is some method of power transfer between the US Segment with the honking big arrays, to the Russian segment. But since the Russian segment is basically Mir 2 (Zvezda, and an FGB tug ...
13
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1answer
583 views

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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1answer
2k views

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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