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Questions tagged [iss]

Questions about the ISS (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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13 votes
2 answers
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If Crew Dragon can dock autonomously, why is there a crew aboard when they change from docking port to another?

I was watching the redocking the other night and they kept mentioning that it can redock autonomously. If so, why is the crew there? Is it there as a backup in case the autonomous system fails? Is ...
An Infamous Historian's user avatar
7 votes
1 answer
810 views

Can the equipment behind panels of Russian ISS modules be reconfigured like the US modules?

I couldn't find any photos or information about how the Russian modules are configured inside the panels; RussianSpaceWeb's Nauka page has some articles that would likely help, but they're paywalled. ...
Dakota's user avatar
  • 145
2 votes
1 answer
128 views

Is this line in the SpaceX livestream engine exhaust?

In the livestream of the recent mission CRS-30 from SpaceX, one could see a vertical line going up. However in other camera shots it was not visible. Was this line the engine exhaust or was there some ...
The Rocket fan's user avatar
6 votes
2 answers
1k views

Is there an archive of photos shot by astronauts on the ISS?

Many astronauts on the ISS take photos which get published. Is there a single archive that contains all of these? I've done several searches, but I only come across small collections e.g. on the ...
Hobbes's user avatar
  • 128k
2 votes
2 answers
249 views

Why didn't Crew 8 launch to an elliptical orbit with an apogee closer to the altitude of the space station?

Crew 8 launched to a 191x215km orbit (ref), but the ISS is orbiting at 425km (ref). I'm curious as to the reason why they didn't launch into, for example, a 191x425km orbit initially.
phil1008's user avatar
  • 5,583
9 votes
1 answer
429 views

Are the pressurized modules of the ISS always open to each other?

Do pressurized modules next to each other always stay open, or do the resident astronauts glide through a module, open the hatch, go through, close the hatch, and then glide through the next module, ...
Blue Skin and Glowing Red Eyes's user avatar
22 votes
1 answer
4k views

How much does air on the ISS cost?

I was reading an article which broke down some of the methods of oxygen creation on the ISS. This was in response to my daughter commenting that "air is free," and being curious about ...
Cort Ammon's user avatar
  • 2,211
9 votes
4 answers
4k views

Will there be another joint International Space Station (ISS) after the current is retired?

Currently, as far as I know, the Chinese are building their own "ISS". I heard that they are open to welcoming most EU countries. Does anyone have heard any news on building a newer "...
Yi Qiang Ji's user avatar
6 votes
1 answer
193 views

How much time does the ISS require in "non value adding activities"?

Generally, we can divide the things that a worker, in this case an astronaut, does, into two categories: Value adding: Activities which contribute directly towards the employer's goals. In a company, ...
Dragongeek's user avatar
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4 votes
1 answer
318 views

A cancelled EVA for expedition 70?

I am wondering whether the December '23 EVA by Moghbeli and Mogensen (Expedition 70) is definitively canceled? If so, why? The mission ends now in a few weeks.
ray's user avatar
  • 459
6 votes
1 answer
1k views

Apparently the ISS cupola windows are Replaceable in orbit. What is the pressure hatch design and procedure used when the window is leaking?

Photo: ESA In this answer to How (the heck) do you replace a space station window in orbit? it is explained that cupola windows can be completely replaced in orbit. Unfortunately, one of the .pdf has ...
Woody's user avatar
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19 votes
4 answers
9k views

Who navigates the ISS?

The ISS orbits around the world. Do astronauts fly the ISS on Earth's orbit like a plane pilot? If it wanted, could the ISS go to a specific part of the world apart from the the usual orbit? Does the ...
Beyhan Çıtak's user avatar
7 votes
1 answer
263 views

Will ISS astronauts be able to observe the 2024 solar eclipse?

Observing a total solar eclipse is an amazing experience, but observing it from orbit would be truly spectacular. The ISS astronauts could potentially have an opportunity in 2024, but will the ground ...
Woody's user avatar
  • 22.1k
4 votes
1 answer
815 views

The coolant leaks on the ISS and associated spaceships: are they still mysterious?

Are the real reasons now known that caused the leaks in the Soyouz, Progress and heater exchange devices on the Nauka module causing the loss of that special liquid and giving a lot of troubles to ...
ray's user avatar
  • 459
6 votes
0 answers
146 views

What happened to Flexcraft?

The DSH Flexcraft seems like a great complement to “traditional” EVAs. Interior environment would be “shirt sleeve”. Astronauts could “scratch where it itches”. It would share a common atmosphere (...
Woody's user avatar
  • 22.1k
17 votes
1 answer
5k views

Is there still a legless phantom crew member on ISS?

The Phantom Torso was designed to gather data on ISS crew Radiation exposure. What was its fate?
Woody's user avatar
  • 22.1k
4 votes
1 answer
503 views

What "extra protection" from ammonia is needed during an EVA?

From a Scientific American article$^\color{magenta}{\star}$ on an ammonia leak at the ISS: Ammonia is so toxic that spacewalks nearby the substance must have extra precautions built in to reduce ...
Woody's user avatar
  • 22.1k
13 votes
2 answers
1k views

What are the "insect antennae" on the MMU (Manned Maneuvering Unit)?

What are the “insect antennae” structures in front of the astronaut’s visor? They appear to be attached to the MMU, but do not appear in the MMU User Guide, static displays or Weightless Environment ...
Woody's user avatar
  • 22.1k
4 votes
2 answers
155 views

Do ISS astronauts have a preference for when EVA tasks are scheduled with respect to lighting conditions?

Given the choice, do ISS astronauts prefer to schedule EVA tasks on the “day light” side of the ISS, the “shadow" side of the ISS or in the shadow of Earth’s night side? I suspect the intense, ...
Woody's user avatar
  • 22.1k
3 votes
2 answers
524 views

If a baby was born on the ISS, what would its nationality be?

If a baby was born on the ISS, what would its nationality be? Many countries grant citizenship to any baby born within their territory, but the ISS is not national territory ... or is it? If a ...
DuckyPolice alt's user avatar
2 votes
1 answer
352 views

GMAT SGP TLE Propagator and maneuver

So this time I try to use GMAT(2022 ver). I am using the SPICESGP4 TLE Propagator to simulator ISS's orbit. For now it work well. However when I try to use the burn to change its orbit altitude, it ...
Achilles chan's user avatar
8 votes
2 answers
2k views

Why is the central truss segment of the ISS called S0?

Why is that segment of the ISS truss called S0, not P0, C (for center) or just 0?
EarthAndMoon's user avatar
1 vote
0 answers
86 views

How many tonnes of cargo are stored on the International Space Station?

I think I read somewhere that SpaceX's Starship should carry 100 tonnes to the moon, and that this amount of mass was greater than the total cargo on the ISS, but I can't find a reference confirming ...
tomh's user avatar
  • 703
6 votes
4 answers
358 views

Deorbit ISS vs. Preserve ISS as raw materials for ISM?

Recent news: NASA Seeks Proposals from US Industry for Station Deorbit Spacecraft (ISS) NASA has released a request for proposal from U.S. industry for the U.S. Deorbit Vehicle (USDV), a spacecraft ...
Rob's user avatar
  • 161
0 votes
0 answers
172 views

Live_ISS_Stream stopped?

so I've come across this video, 11 hours of ISS transmissions during 2021 ASAT incident by Russia. The description says the footage was archived from this IBM stream site, so I've looked to see if it ...
user52175's user avatar
3 votes
1 answer
154 views

Has intra-cranial pressure been measured on ISS astronauts for SANS research?

Visual impairment (VI) <and spaceflight-associated neuro-ocular syndrome (SANS)> is currently ... NASA's top health risk for long duration spaceflight, and millions of dollars has been allocated ...
Woody's user avatar
  • 22.1k
2 votes
1 answer
323 views

In MATLAB, Computing a new TLE/orbit following a delta-v impulse?

I have already worked on this project for a week, and I still can not solve this problem by myself. How can I update data for the SGP4 OrbitPropagator in Matlab's ...
Achilles chan's user avatar
3 votes
2 answers
167 views

Does earth orbiting debris that threatens the space station have a particular direction bias?

I'm starting to investigate the danger of orbital debris on the ISS (international space station). One could assume that due to the orbital velocity vector, that any debris that the ISS encounter, ...
not2qubit's user avatar
  • 167
9 votes
1 answer
1k views

Visibility of ISS at extreme latitudes

Is there a limit to the latitudes the ISS can be seen from (i.e. could it be seen at the North or South poles)?
Michael Bunce's user avatar
5 votes
1 answer
288 views

Why Isn't the ISS exclusion zone spherical?

According to a video by Real Engineering the ISS has a 50x50x0.75 km exclusion zone. Why Isn't it spherical and why is the "vertical" axis so much smaller? Screenshot from Don’t Drop your ...
moshevi's user avatar
  • 479
4 votes
2 answers
2k views

Did the ISS modules have Flight Termination Systems when they launched?

Not that it did, but if something stuffed up during the launch of a module, could it have been destroyed before hitting the ground?
Blue Skin and Glowing Red Eyes's user avatar
14 votes
1 answer
3k views

How dangerous is tossing equipment off the ISS?

On 2023 June 22, during an ISS spacewalk, Sergey Prokopyev and Dmitry Petelin "tossed overboard" three no longer needed devices, "off the back of the space station in a direction that ...
Camille Goudeseune's user avatar
7 votes
1 answer
1k views

ISRO’s decision not to participate in the International Space Station Program

ISRO has a well-established and successful space program, with many notable achievements to its credit. However, despite its capabilities and expertise in the field of space exploration, ISRO did not ...
Mikhail Kim's user avatar
14 votes
2 answers
1k views

What is this small white device with LCD and 10 keys on the International Space Station?

I see this device in many places in International Space Station; what is it called and what does it do?
Ostoura's user avatar
  • 243
2 votes
1 answer
391 views

ISS (ZARYA) TLE to Latitude Longitude Conversion

I am trying to take TLE of ISS (ZARYA) and get the latitude longitude and height. I am aware the TLE is in TEME~(True Equator Mean Equinox) frame. This means that the TLE was generated considering the ...
zephyr0110's user avatar
  • 2,901
21 votes
3 answers
6k views

Why will Starship's 150 ton payload capacity be sufficient to carry 100 people to other planets?

The ISS weighs 450 tons and carries 7 people for three months without resupply. Starship is supposed to carry 14 times as many people for more than twice the duration with one third the mass. How?
Abdullah is not an Amalekite's user avatar
23 votes
3 answers
8k views

Why aren't the radiators on the ISS straight?

The radiators look like a highly stretched paper accordion. Is it just because of how they decomposed, or is there a deeper reason?
Saturn V's user avatar
  • 1,303
12 votes
1 answer
3k views

How close was the ISS to running out of supplies after the failure of CRS-7?

2014-2015 probably was a scary time to be aboard the ISS, though not for the usual reasons. They were worried about supplies running low, at least somewhat. There was quite the string of bad luck. ...
Starship - On Strike's user avatar
1 vote
1 answer
86 views

What is the relationship between the power supply system and the thermal control system?

According to Wikipedia, the solar panels of the ISS produce an average of about 120 kW of electrical energy, which is then used by the station's systems. Can it be converted into something other than ...
Saturn V's user avatar
  • 1,303
4 votes
2 answers
376 views

How many printed novels have been in space to date?

I am talking about actual novels brought for recreational purposes. As in manuals don't count. Also, I would like to know who and on what mission these were brought.
Starship - On Strike's user avatar
3 votes
1 answer
845 views

How are oxygen and nitrogen replenished in the storage tanks on the ISS?

How they add gases to high pressure tanks. Will the supply trucks bring it? And how will it be connected?
Saturn V's user avatar
  • 1,303
4 votes
1 answer
125 views

How was SSRMS IROSA IPA disposed

On this video, we can clearly see the payload being disposed, but I fail to understand how it gained so much momentum as the Canadarm appears to not be moving. The video mention a new procedure, can ...
Antzi's user avatar
  • 12.6k
14 votes
1 answer
4k views

Was the shot-on-the-ISS movie "The Challenge" ever released or is there a release date?

In October 2021 scenes for a movie entitled "The Challenge" were shot onboard the ISS with actor Yulia Peresild and director Klim Shipenko spending a short stay on the station. Source: ...
Organic Marble's user avatar
7 votes
1 answer
1k views

Could you observe air-drag on an ISS spacewalk?

The ISS orbits in the thermosphere and needs periodic re-boosts because of air-drag. At the other extreme, the slowest(?) fixed-wing aircraft are f1d planes made out of 2 grams of balsa wood, ...
Kevin Kostlan's user avatar
15 votes
3 answers
4k views

What does trash from ISS consist of?

How much does it cost to return 1 kg from the ISS to the Earth? What are the parameters influencing this price? What kinds of waste does the ISS dispose of? To mind come: human waste* household items ...
Vorac's user avatar
  • 499
3 votes
1 answer
186 views

What do the module walls look like on the ISS?

I know they are about 10cm thick and act like a whipple shield. https://ntrs.nasa.gov/citations/20120002584 It should be two layers of aluminum. But when I look at the photos from the inside, the ...
Saturn V's user avatar
  • 1,303
20 votes
2 answers
4k views

How much does it cost to return 1 kg from the ISS to the Earth? What are the parameters influencing this price?

I heard in a few places downmass is a limiting factor in the ISS national lab capacity. Is that true? According to NASA's pricing plan, it actually costs more to get downmass than upmass. Why is that?
nadav zilberman's user avatar
6 votes
1 answer
407 views

Dragon as a Lifeboat for Soyuz

The only serious alternatives I have seen reported for the current Soyuz coolant problem are to either use the existing Soyuz, hopefully patching and testing it enough while attached to ISS to be able ...
manassehkatz-Moving 2 Codidact's user avatar
3 votes
1 answer
163 views

How long does the Soyuz Instrumentation/Propulsion Module remain attached to the Descent Module during re-entry?

Soyuz MS-22, attached to the ISS, has developed a leak in an external coolant loop in the Instrumentation/Propulsion Module. This spacecraft is needed to return the three cosmonauts who are currently ...
Dave Gremlin's user avatar
  • 2,891
4 votes
2 answers
130 views

Why does the gold reflector of the COWVR on the ISS rotate?

The answer here What is the rotating gold object on the outside of ISS? describes in detail what the rotating dish is, and what the package is used for. However, it is not clearly explained why ...
Ahmed Tawfik's user avatar

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