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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1answer
101 views

What parts of the ISS would impact the Earth with a substantial amount of kinetic energy?

There are several posts and comments about the parts of the ISS striking Earth on re-entry. Here is one example Would the ISS actually burn up completely? It's pretty big. No, the Mir was ...
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If the ISS had an emergency, how long would it take to get a rocket to it?

If there was an urgent need to launch a rocket to the ISS, how long would it take to have a rocket ready to launch? I am trying to understand what factors take up the time to prepare for a rocket ...
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What GEO relay satellite will the ISS use for end-to-end optical communication with a ground station?

This LEMNOS page on NASA's Explorations and Space Communications site says: The Integrated Laser Communication Relay Demonstration (LCRD) Low-Earth Orbit (LEO) User Modem and Amplifier Terminal (...
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Will Optical communications be possible between Columbus' Ka-band (COLKa) Terminal at the ISS and EDRS?

The BBC's British radio antenna to arrive at space station says: The new fridge-sized terminal will route video, voice and data to the ground through satellites that are actually higher in the sky ...
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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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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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How is the atmosphere in the pressurized housing of ISS' HDEV cameras managed? Outgassing addressed?

This answer says: The ISS live feed uses the cameras of the HDEV experiment. This is a group of four cameras in a pressurized housing attached to the outside of the ISS. A hermetically sealed ...
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Are there any ISS component failures that could cause irreparable harm to the station?

What component, if any, would cause irreparable harm ("total") the ISS if it were to break or require replacement? If this component exists, when is it going to reach its end-of-life? By "total", I ...
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Is there, or has there ever been anything remotely like an electron microscope in space?

I'm guessing Cmdr Hadfield's tweet is only showing an old file photo, but electron microscopes can be quite handy and complement optical microscopes, at high or even low magnification as shown here. ...
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272 views

Would astronauts on the ISS be affected by the radiation from a global nuclear war?

I was wondering what would happen to the ISS astronauts if some global disaster wiped out all ground support. This question tells us that a 2-person crew might survive up to a year on stockpiled food ...
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301 views

Why are space tools shiny

I was watching one of the broadcasts of a space walk on the ISS. I noticed the Pistol Grip Tool (Thanks Courageous Potato) looks like its made of polished stainless steel. Why do these tools have ...
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ISS Mass breakdown [duplicate]

I'm looking for some solid numbers that break down the mass of the ISS into functional categories (with the goal of making a neat pie chart). Such categories might include the mass of... Docked ...
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Difference in communication delay on ISS

What cause the difference in communication delay, about 11 seconds in this video: and apparently almost no delay on this one: ...
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216 views

How hard was it for the Shuttle to perform attitude control for the entire ISS? Did they have to calibrate?

This answer to the question How was the Space Shuttle Orbiter used for ISS Reboost? describes a procedure I never knew happened. When the shuttle was docked to the ISS it sometimes used its rear ...
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Would all crew leave the ISS if one had a medical emergency?

If someone on the ISS had a medical emergency that required them to immediately return to earth (such as a severe stroke - something where they could not give them ideal care on the ISS and required ...
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Does the ISS medical inventory include a sun-tan/sunscreen lotion/cream?

Wikipedia writes to say Exposures on the ISS average 150 mSv per year, although frequent crew rotations minimize individual risk I assume here the crew aboard the space-station receive more ...
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How long could the ISS function if removed from Earth orbit?

Suppose the ISS were instantaneously moved to the opposite side of the Sun from Earth - how long would it continue to function? Are there any systems aboard that depend on passing behind the planet ...
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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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Why no Iridium-level flares from other satellites?

Wikipedia explains Iridium and other satellite flares very well. The Iridium reflective surfaces are at very particular angles and can flare up to magnitude -9.5, however other satellites don't ...
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Why does the Alpha Magnetic Spectrometer (AMS) on the ISS use carbon dioxide for coolant?

Spaceflight Now's Astronauts finish repairs to space station cosmic ray detector says: Originally designed to operate for just three years, the AMS chalked up eight years of operation before being ...
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Have there ever been any incidents where something valuable was unintentionally throw out with the trash?

In "What do astronauts do with their trash on the ISS?", a commentator asked the title question and was encouraged to make it a new question, but apparently never did. The linked question is ...
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Why escape pods activates thrusters when landing on water ?

I am seeing Life (2017) movie, movie showed ISS dropped escape pod to the land, when it reaches certain height, escape pod release parachute & near the water surface, thrusters got activated. you ...
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Do astronauts develop the ability to regularly place an object at rest inside the ISS after extended periods in microgravity?

This image from the ESA prompted the question why the fruits at the bottom left were not floating. An online response claimed after an extended time on the ISS astronauts get used to placing ...
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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 ...
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161 views

Besides the (currently down) HDEV, are there other public live video feeds from the ISS?

I am working on spacecraft simulation software, and I would like to validate my ISS simulation that uses ISS-Mimic's code to connect to live ISS telemetry. I already have some early validation done ...
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357 views

What psychological issues do astronauts experience during spaceflight, caused by spaceflight?

What psychological problems or issues do astronauts experience during spaceflight, that are caused by microgravity, background "white noise" or other unusual environments that astronauts in space are ...
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What is the most massive object in the ISS whose position was altered by the circulating air?

In Leo S's comment to the question, Do astronauts develop the ability to regularly place an object at rest inside the ISS after extended periods in microgravity?, he said "forces due to circulation of ...
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Spacecraft remaining at station-keeping with respect to the ISS

If any spacecraft has remained at station-keeping with respect to the ISS for 12 hours or more, how far from the station did the craft remain?
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How many “main” batteries does the ISS have? How many are still nickel-hydrogen?

CBS News's Third all-female spacewalk completes job of swapping out batteries says: NASA is in the process of replacing 48 older-generation nickel-hydrogen batteries in the station's solar power ...
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How do ISS astronauts keep proficient on capsule procedures in long duration missions?

Before astronauts and cosmonauts go to the ISS they have months of simulator training on Soyuz spacecraft procedures for launch, rendezvous, docking and re-entry. Yet, once they are on the ISS they ...
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567 views

How big are the tidal accelerations within the ISS?

This question asks about placing an object at rest in the International Space Station. But the ISS is a large object, large enough that gravity will vary across it and cause tidal forces that can ...
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827 views

Does the ISS have a rotational motion in addition to its translational motion?

We all know ISS is orbiting the earth so it has translational motion, but, does it rotate on its own axis as well? Thanks
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How many spacecraft deployed from the ISS have escaped Earth orbit? Are there plans for any in the near future?

After reading Why did the Ulysses probe reach Jupiter much faster than Galileo? and answers to How many Space Shuttle payloads ended up beyond Earth orbit? and also What's the largest rocket that was ...
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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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How exactly is the balance of minerals handled on ISS with the use of reclaimed (demineralised) water for human consumption?

This question and answers to it contain wealth of information regarding recycling of ISS resources, and water is one of them. Water, recycled from water waste, atmosphere moisture and urine, is ...
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How feasible would it be to move the ISS to the surface of the Moon to recycle its components in future?

I see it as an awful waste of energy in not only creating the International Space Station (ISS) components, but also in getting them into space to only decommission the station by letting it fall back ...
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ISS Life Support Consumable use rate

At what rate does the International Space Station, (ISS), consume life support resources and other consumables? I'm attempting to calculate long term life supoprt requirements for a system based on ...
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1answer
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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 ...
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Can an astronaut stand at attention in the ISS?

Am I correct in assuming it is near impossible for astronauts to stand still inside the ISS, even if their feet are secured under a blue IVA rail? NASA astronauts Terry Virts' foot under a blue IVA ...
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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 ...
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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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Does the “Tennis Racket Theorem” apply to the ISS? Does it rotate around its intermediate (unstable) axis?

Wikipedia's Tennis racket theorem begins: The tennis racket theorem or intermediate axis theorem is a result in classical mechanics describing the movement of a rigid body with three distinct ...
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New Year's Celebration on the ISS

When/what time zone do astronauts aboard the ISS celebrate the new year? Bonus: How many NYE's can astronauts aboard the ISS celebrate, counting only when the new year starts in the time zone they'...
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Music played in space

Besides the Curiosity rovers's rendition of Happy Birthday and Chris Hadfields guitar playing aboard the ISS, is there a list of music played in space live (robots playing music counts too)? Note: ...
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First actions taken after identifying a potentially catastrophic decompression?

Organic Marble gave an answer to my question "Procedures if there was a shuttle decompression in the vacuum of space," precisely as I worded the request. The wording of my question was imprecise so ...
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Potential catastrophic death on the ISS from mistakes

Other than from decompression and fire, what other ways has NASA or the Russian space program identified unique ways someone on the ISS could die suddenly, in particular from human error with the ...
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How do the Starlink satellites shine?

As we can see the Starlink satellites with the naked eye as they pass by. I was wondering about what makes them visible. Do they have large mirrors that reflect the sunlight making them look as if ...
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What happens between Payload deployment and the ISS docking

When SpaceX is livestreaming their CRS missions they usually end up by separating the payload from the second stage with an altitude at about 200 km. But I am wondering how the payload gets up to the ...
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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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What about Orion ISS missions?

I remember that the Orion spacecraft was a thing when it had its maiden voyage in 2014. Nowadays, all I read about is the SpaceX Crew Dragon and Boeing Starliner, which are both running late. Soyuz ...

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