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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24
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4answers
3k 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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0answers
16 views

What can/do astronauts look at with the portable telescopes aboard the ISS?

I would like to know what will be the visibility from the portable telescope aboard the International Space Station. What could they potentially view, and what are (at least some of) the things they ...
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1answer
138 views

When the ISS is de-orbited, what is the likely mass of the largest impact fragment?

Some parts of the ISS will be more fragmentation-proof than others. Engine bells and pressure vessels, for instance. Has NASA done a formal assessment of component survivability to determine what big ...
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1answer
439 views

Why do EVA suits have legs?

Why do EVA suits have legs? Planetary exploration suits (PES) obviously need legs. Spacesuits with legs are “a classic icon of human space exploration” and a requirement for mobility. https://www....
10
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1answer
328 views

Has the ISS ever "flown upside down"? Has the cupola ever "looked up"?

For a spacecraft in low Earth orbit let's call the zenith direction (vector away from Earth) "up". For most of its life I think the ISS has orbited with it's "up side" pointed &...
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New spin on laundry day: How will ISS cope with washing machine vibration and angular momentum?

Although the ISS currently has no laundry facilities, NASA’s Glenn Research Center sponsored a washing machine design contest to do the drudgery during spaceflight. Plans have been made for testing a ...
4
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0answers
60 views

How many hours/week on the ISS is spent on science vs maintenance?

This was asked in 2016 : Does ISS crew exercise time count toward their X hour work week? The answer as of 2016 was 40 hours / week for a crew of 6. But as noted there, when the crew size increases to ...
2
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4answers
679 views

Is Starship planned to fly directly to the ISS without first stage? Is it even possible?

I'm having difficulty understanding how/if Starship and/or Super Heavy could be used to deliver crew to LEO. Is it expected to deliver astronauts to the ISS Crew-Dragon-style, but without the 2nd ...
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Pressurized gloves have significant limitations. What are objective advantages/disadvantages of the alternatives? [closed]

Conventional EVA suits suffer from mobility and tactile sensory limitations due to their pressurization. Any articulated container which changes volume with motion will resist motion if pressurized. ...
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3answers
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Why did the design for Space Shuttle docking change?

While browsing concepts of Space Station Freedom and other '80s NASA concepts (I love concept art), I noticed that there are some interesting differences in how the Shuttle was intended to dock with a ...
3
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1answer
474 views

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
89 views

What are all these packages attached to a side module of the ISS? How did they all get there?

Ars Technica's New images of the International Space Station reveal that it is still a jewel includes the photo below and I've added a view of a side module with a collection of various rectangular ...
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0answers
47 views

Oxygen Generation System

Is there any possible failure that OGS (oxygen generation system which ISS has) can overproduce oxygen in a spaceship? Just wondering the possibility how can spaceship explode by themselves without ...
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2answers
950 views

What is the delay of the YT live stream for ISS?

On YT, we can see a live stream from ISS. What is the delay here (given you have a modern high speed internet access)?
70
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4answers
32k views

Why does the ISS have to be destroyed?

ISS might be destroyed soon, de-orbiting for a controlled reentry into the Pacific Ocean. Why isn't simply pushed away from Earth to an outer stable orbit (not sure if it's possible) or even into an ...
4
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1answer
260 views

What caused the ISS Two Line Element Day of Year problem beginning 12-24-2019?

Does anyone know happened at NORAD or NASA or wherever the published TLEs originate, that caused the ISS TLE wonkiness during the last week of 2019? It did not happen in 2018. What happened? The ...
6
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1answer
808 views

World's most expensive space cookie? (What am I looking at, object identification, rivets and all)

On the NPR page Our Favorite Things, Short Wave-style there is an image whose caption reads Earlier this month, crew aboard the International Space Station received a a novel item in their cargo re-...
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2answers
3k views

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 ...
6
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1answer
195 views

What generates static charge on the ISS?

There are two plasma contactors on the ISS Z1 truss, designed to neutralize static electrical charge of the space station. What generates static charge on a spacecraft? If it is picking up charge from ...
2
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1answer
73 views

Which S-Band ISS antenna stopped transmitting to TDRS and was replaced during the recent 2021-12-02 EVA?

CNN's says: Marshburn and Barron began their spacewalk at 6:15 a.m. ET, and it's expected to last for about six and a half hours. The team will replace a malfunctioning communications antenna. Live ...
7
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0answers
176 views

Is the ISS in danger of the outer radiation belt?

Is the ISS in danger of the outer radiation belt? I know that the ISS is in the low earth orbit and that it briefly passes through the base of the outer RB, but it is actually in danger? How does the ...
14
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1answer
337 views

How much does the ISS "banana" or flex under the constantly changing conditions of solar heating?

This answer to Do antennae on the ISS have to constantly move to maintain data links? discusses some of the challenges precisely pointing an antenna mounted to the ISS exterior. While the ISSs orbit ...
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1answer
400 views

Shortest stay at the ISS once continuous operations and regular crew rotations began? How does Maezawa (planned) 12 days compare?

Confused about Yusaku Maezawa's first "standing on the shoulders of giants" PR photo on the shoulders of Elon Musk in 2018 then launching to the ISS aboard Soyuz, I found that the article ...
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1answer
240 views

What factors have enabled the increase in ISS crew?

A glance at the ISS expeditions wiki seems to show that the ISS's crew complement has been increasing in recent years, from between 3 and 6 to 6 to 11 - a boost to the science productivity, I'm sure. ...
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2answers
281 views

What size hole in the International Space Station would be catastrophic?

I was reading "Russia threatens criminal charges against a NASA astronaut" in arstechnica.com. Somewhere in the article it says: " At the time, a 2 mm breach was discovered in the ...
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72 views

How long does it take for the ISS astronauts to isolate a module

In the chosen answer for What size hole in the International Space Station would be catastrophic, we find that a 0.6cm hole would depressurize the ISS to life threatening levels in 14 hours. A 20cm ...
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1answer
150 views

What do "initiate dragon safe haven" and "close all centerline hatches" and "next two crossings" mean?

CNN's video Hear warning to ISS after Russia's dangerous missile test plays an audio clip of a voice communication from NASA Houston ground control to the ISS crew, with the message: ...we will need ...
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1answer
94 views

What are the operational details of the Canadarm Latching End Effectors?

There are numerous pictures of grapple fixtures and LEE available. I can appreciate how the wire snare works to snare the center pin of the grapple. But I’m foggy on how the location cam/arm ...
8
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1answer
2k views

What's is this very CGI looking clip in this NASA video of the Alpha Magnetic Spectrometer installation?

This is the NASA video AMS Time Lapse Installation a time-lapse of the Alpha Magnetic Spectrometer (AMS) installation at the International Space Station. At about ...
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1answer
382 views

How many different walk-off maneuvers can the ISS robotic arm do?

I didn't realize that either end of the robotic arm could act as both a "shoulder" and a "wrist", and that it could plug it's "wrist" into a second power-data-grapple fixture and then unplug it's "...
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1answer
1k views

What is the user interface of SSRMS

How does the control panel for Space Station Remote Manipulator System (the robotic arm) look like, and where is it located? Is it some joysticks, or just a screen+keyboard? What kind of feedback (...
2
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1answer
283 views

How are cameras arranged and used to monitor activities outside the ISS?

Questions like Does the ISS have zenith-facing windows? and also Does the ISS have any ability to detect or sense unexpected/unscheduled objects in close proximity? have also been asked about ways to ...
6
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1answer
568 views

What are joint systems used for mounting manipulators to spacecrafts?

What are the joint systems used for mounting mobile manipulators to spacecraft? Looking answers for questions like: How SSRMS (Canadarm2) is mounted to space station? What joint system does it use ...
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2answers
3k views

Can an ISS module survive reentry?

Nasa is making plans to de-orbit the ISS safely over the pacific ocean, this eventually leads to the question of whether or not an ISS module can survive reentry (survive meaning it is recognizable ...
6
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1answer
254 views

What brand and model is the hand-held sextant tested on the ISS?

Astronaut Alexander Gerst is testing an hand-held sextant on the ISS in the context of the experiment Sextant Navigation for Exploration Missions, see picture below. What is the brand and model of ...
23
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3answers
8k views

If you release a tool outside the ISS in space will it remain at the "same" place forever?

If an astronaut doing a repair outside the International Space Station (ISS) gently lets go of a tool into space, will it keep "flying" (orbiting) at the same spot relative to the ISS where ...
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0answers
144 views

Deorbit of ISS is a unique event. Are there plans for scientific observation?

The ISS deorbit will be unique. Not only because of its mass, but because the time, location and observing conditions can be accurately chosen. Instruments could be placed for detailed observation. ...
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1answer
132 views

Is pre-deorbit explosive disassembly of the ISS utilising propellant a useful way to reduce impact debris?

The ISS could be disassembled post retro burn to provide smaller pieces for burn-up. If the hull space were filled with a stoichiometric mix of propellant from the deorbiting vessel post-burn, it ...
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5answers
13k views

Why does the ISS track appear to be sinusoidal?

Okay, time for a stupid question, but it keeps me up at night trying to figure it out. The ISS 'route' appears on paper as such: I am imagining it has to do with a combination of its orbit and the ...
5
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1answer
223 views

When jettisoning heavy objects from the ISS e.g. 2.9 tons of batteries+, how much angular impulse does the station get? Corrective actions necessary?

Discussion below this answer to Why does it take so long for ISS garbage to fall out of orbit? addresses the jettisoning of the ~2.9 ton pallet full of used batteries full of nickel and other things. ...
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2answers
205 views

Can ISS trash be used as reaction mass for orbital maintenance

There have been a number of videos posted about trash being hand-pitched out the back of the ISS. This seems like a waste of potential reaction mass, especially since it cost $20,000/kg to get it up ...
6
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0answers
158 views

What to do until the hearse arrives: is there a designated morgue on ISS?

When I have asked, every commercial ocean-going vessel I’ve been on has provision for a refrigerated morgue. In the good old days, it was a cannon ball at your feet and six feet of sail cloth with the ...
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2answers
696 views

Effects On ISS Orbital Mechanics Resulting From Added Mass Of Dragon Capsule Visit

Does the ISS require any type of orbital mechanics management once the Dragon capsule was confirmed with a positive airlock seal, and the mass of the spacecraft, 2 additional astronauts, and supplies ...
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5answers
11k views

Are there any weapons in space?

We can break this down into two categories: For internal security purposes, does the ISS have any type of weapon on board? For global security purposes, are there any orbiting weapons (that we know ...
6
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1answer
320 views

Could the International Space Station be fitted with solar sails?

How much solar sail and vane surface area would be needed to replace the boosts needed to keep the ISS in orbit? Could this be done at a higher orbit minimizing atmospheric drag? What is the closest ...
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3answers
41k 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 ...
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2answers
2k views

Why does the ISS always point 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 ...
2
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1answer
46 views

Are the original ISS solar panels single or polycrystalline silicon? What about the new ROSA roll-out arrays?

Most silicon photovoltaic arrays on Earth are silicon (no layers of III-V material for added efficiency) and they are grown as polycrystalline silicon rather than sliced from single crystal silicon ...
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2answers
3k views

Soyuz for Sale?

Reading through some stuff on the interwebs I came across some information saying that some old Soyuz Capsules are keep in a junkyard. Does anyone know if it's actually possible to purchase one of ...
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0answers
140 views

Exterior "running lights" on ISS?

In Scott Kelley's memoir "Endurance," he describes how challenging it is to navigate the exterior of ISS when in Earth's shadow, and he mentions that his Russian colleagues would just stay ...

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