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
135 views

What capacity will be lost by deorbiting Pirs

Nauka should, hopefully this year, replace the ISS' Pirs module. While Nauka is already pretty old, I suspect it will bring a lot of interesting features to the space station. However, Pirs might have ...
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Can or 'how long will' carbon fiber survive in space

Let's assume that social activist shut down metal mines in future. And we plan to built and launch another space station. Can we build it with carbon fibre? or is there any alternative to it? ...
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What are ISS orbit's sudden falls?

In current (2021) graph from heavens above (https://www.heavens-above.com/IssHeight.aspx) there are sudden falls - more than 1km in many cases and then after other sudden changes, the graphs return on ...
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Do ISS crew have the opportunity to take daily naps if they'd like to?

Could "days" on the space Station be made shorter to accomodate sleep patterns? raises an interesting point. I've often heard that for some astronauts they never really were able to sleep as ...
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Will lateral flow on paper (such as chromatography) work in microgravity?

I wonder whether or not lateral flow will work in the ISS. Thanks!
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Do rockets headed to ISS get delta V benefit from Earth's rotation

A rocket on the launchpad moves Eastward with the rest of the earth as it rotates about its polar axis. This means that on launch, the rocket already has a sizable eastward velocity component: ~460 m/...
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Orbital Insertion Altitude for Rendevous with ISS

When SpaceX launches a CRS mission to the ISS, what altitude do they target at orbital insertion? If the ISS is 400 km above ground, do they target 400 km at SECO? Or do they target a lower number---...
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Pee processing in space

Do astronauts drink each their own pee or is there a common pee container where all pee get collected and processed? It's clear to me that the obtained water must be sterile, but even then, I imagine ...
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2answers
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How many time-zone does the ISS cross through during one orbit?

A recent non-answer to an unrelated question stated that the ISS crosses 16 time zones during New Year's Eve, which is obviously incorrect, the actual answer being "around 200". But this ...
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1answer
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Do astronauts on ISS notice Earth's seasons?

Has anyone stationed on the ISS for some months reported noticing the changing seasons on Earth in any way like people on the surface do, subconsciously without needing to look up numbers for anything?...
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Why is the Orbital Velocity after SECO of Crew Dragon with 27K km/h lower than of ISS?

Crew Dragon after SECO: Orbital Vfelocity at 27,000km/h at 200km altitude (roughly 9-10min after liftoff). ISS Orbital Velocity at ca. 28,000 km/h at 400km altitude.iss_altitude,iss speed However from ...
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If there's a hole in Zvezda module, why didn't all the air onboard immediately escape into space?

The ISS is leaking through a hole in the Zvezda module that still hasn't been found. However, as with all pressurized chambers, shouldn't all air instantly run out through the hole into the vacuum of ...
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What is the extent of on-orbit refueling experience at the ISS? Which fuels? which spacecraft?

In a discussion associated with this answer a comment includes the following: The ISS is the only spacecraft in the world that has experience with regular on-orbit refueling. What is the extent of ...
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Can't find ISS position data API that uses the https protocol

I have used the open-notify API to track the ISS in a script I've written. It's just excellent, but it doesn't use the secure version of the http protocol. Now I find myself trying to include it on my ...
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Is there a publicly available inventory of things sent to the ISS?

I spent some time looking through NASA datasets and news articles, and couldn't find anything, so I'm hoping that someone in the community will know better than I do: I'm trying to understand what the ...
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Bishop airlock: explanation of the name?

Nanoracks' new Bishop Airlock will soon be installed on Node 3 and will provide some cool operational capabilities. But, I don't get the name. This Verge article says ...
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Why did Richard Garriott have to quarantine following his trip to the ISS?

I was reading about Richard Garriott and the drama surrounding his departure from NCSoft, and I was surprised to learn that NCSoft forged his resignation letter while he was in quarantine following ...
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1answer
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What would happen if the crew launched to dock with the ISS were incapacitated?

Suppose a spacecraft lifted off from the space center and within few minutes after reaching the 200 kilometers altitude on its way to the ISS, and for some reason the crew were incapacitated. Will ...
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What led NASA et al. to decide the ISS should be a zero-g station when the massive negative health and quality of life impacts of zero-g were known?

As the month of November 2020 has marked 2 decades of the ISS being operational as well as the first operational flight of a next-generation spacecraft to it, I felt it fit to ask this question today. ...
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2answers
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What timezone would be used for interstellar travel?

The ISS crew celebrated Thanksgiving today. Apparently the ISS uses Coordinated Universal Time (UTC), which is equivalent to Greenwich Mean Time. What timezone would people use for interstellar travel?...
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What radar-trackable steel ball was thrown from the ISS before October 2015? [duplicate]

The question What kinds of things have been tossed out of the ISS? contains a now-rotted link to a YouTube video of a steel ball being thrown from the ISS for radar tracking tests. I'd sourced it from ...
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1answer
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Leaving the ISS orbit

Working on a project of sorts and I can't wrap my head around this at all., have a question regarding leaving the ISS orbit. If, let us say as an example, an astronaut jumped out of a capsule which ...
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Are pictures taken from ISS geolocalized?

I guess my question is "naive". I get from https://images-api.nasa.gov some pictures of Earth from ISS without any description (just the mission number) or pictures of crewmembers. Taken ...
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When sending astronauts to the ISS, how does each spacecraft sense the other?

When spacecraft with astronauts tries to dock with the ISS, are there special sensors in each used to track the other? Does one usually do the detection, tracking and orientation in order to "...
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1answer
153 views

Did the people aboard SpaceX Dragon Crew-1 flight pilot the Dragon or were they just passengers?

On November 15, 2020, four astronauts left Cape Canaveral for the ISS about the SpaceX Dragon Crew-1 mission. Did any of them fly it or were they simply paying passengers in a space craft that ...
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1answer
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Does the SpaceX Crew-1 commander have any command duties while docked at the station?

The SpaceX Crew-1 mission itself has a commander who is in charge, I suppose, during transit and landing. The ISS also has a commander. Does the commander of crew 1 have any command duties while ...
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If the ISS went to the moon, what would fail first

If the ISS was propelled into an orbit (any orbit) around the moon, what would fail first?
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Russian Chibis suit

The Russian Chibis suit is operational since 1971 and is used aboard the ISS, are there recent developments in this technology? How effective has it been found in counteracting the tendency of fluids ...
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How is CO₂ scrubbed from the air in a space vessel?

Within a space vessel such as the ISS for example, how do the astronauts regulate the level of CO₂ they are breathing and how is the air scrubbed exactly?
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How do US citizens vote in space?

Astronaut Kate Rubins tweeted that she has voted while being on the ISS: How does that work? Did she have some paperwork with her that she can send down to earth with a spacecraft soon? The ...
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1answer
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How to get ISS trajectory information after spaceflight.nasa.gov has been taken offline?

The nasa spaceflight website states that it will soon shut down. I don't know how long this disclaimer has been there so maybe this is nothing to worry about... In any case, which different ways do ...
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Would standard rackmount electronics fit on an International Space Station rack?

A lot of commercially-produced electronic equipment is designed for a 19-inch rack (or less commonly, 23-inch) with a particular spacing for mounting holes. Much of the pressurized volume of the ...
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1answer
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Can they still make espresso on the ISS? If so, with what?

This comment suggests that the origional ISSpresso machine may no longer be running on the ISS. Is that so? If so, can they still make espresso on the ISS? If both are so, with what do they make it?
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Tea bags to find the leak on the International Space Station?

Katya Pavlushchenko (@katlinegrey)'s tweet says: Here’s some of today’s news from the ISS. First of all, the leak was finally found (thanks to the tea bag). Anatoly Ivanishin sent photos to the ...
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Does the door of spaceships such as ISS have locks? [duplicate]

Locks in the sense of keys and locks, not airlocks. Is there any international standards for such locks?
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Unix Epoch in International Space Station

The International Space Station is in a different gravitational field than us on the Earth's surface. Almost all computers / protocols depend on the Unix epoch being consistent everywhere. The Unix ...
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1answer
161 views

Why will the Soyuz MS-17 be relocated on the ISS?

According to the Soyuz MS-17 Wikipedia page, the spacecraft is planned to relocate from Rassvet nadir to Poisk zenith on 10 March 2021. This 3 weeks before the next Soyuz, MS-18 arrives. From ...
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1answer
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Do the Shuttle/ISS EMU suits have model numbers?

Early NASA spacesuits were given model numbers, as described in slide 3 of this NASA Powerpoint. The model numbers were assigned in the format P-#M, where the ...
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How often has the Hitchhiker's Guide to the Galaxy been in space?

I came across an answer saying that a copy of the Hitchhikers Guide to the Galaxy was sent to space in Elon Musks roadster (in 2018). Has the book been in space before that (maybe taken to the ISS by ...
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1answer
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How are the Archival Samples of water on the ISS handled?

This answer includes this schematic showing the overview of the water processing system on the ISS, found on page 341 (page 375 of the pdf) of The International Space Station - Operating an Outpost in ...
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1answer
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Is the silica gel used in the ISS recycled?

I read this answer which raises the question of what happens to the silica gel used in the ISS once it has absorbed humidity. The ISS relies on silica gel to absorb humidity from the atmosphere to ...
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3answers
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What happens to astronaut sweat on the ISS?

Does perspiration from the astronauts aboard the ISS stick to the skin, evaporate or somehow float away from the skin? Is the part of the sweat that sticks to an astronaut's skin kept there until they ...
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1answer
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How are Kounotori modules unbolted? Who or what does the unbolting?

NASA Spaceflight's Final JAXA H-II Transfer Vehicle bids farewell to ISS says: Following CBM vestibule depressurization, 16 bolts that held the Kounotori 9 spacecraft to the Station were removed in ...
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1answer
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ISS Docking / Undocking schedule availability

Is there a website or other API from where the ISS planned docking / undocking events could be available? I would also be interested in historical docking undocking events. Thank you very much in ...
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1answer
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Taking custom software or hardware to the ISS

Before departing to the ISS, astronauts are allowed to pack some personal objects to be taken with them (see other question about packing). What if an astronaut had some self-written software (for ...
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1answer
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Could the Crew Dragon be used to re-boost the ISS?

In an answer to a related question, Jörg W Mittag wrote the following: But more importantly, handling of the Superdracos is currently rather simple. They are safed after reaching orbit and then never ...
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Can Virgin Galactic's Orbital ship reach ISS

We have all come across theories, concepts proposed missions of orbit tour as a part of space tourism. One such company is Virgin Galactic. I have had read that the SpaceShip2 will have merely 6 mins ...
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What happens to the ISS waste? [duplicate]

How is the waste managed on ISS? I guess there are three main waste types: two human waste (liquid and solid) and various packaging for food and substances for experiments. Are they recycled or sent ...
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3answers
203 views

How much time it takes for the capsules to descend from ISS back down to Earth?

How much time it takes for the space capsules to descend from ISS back down to Earth? Soyuz, Dragon, Crew Dragon, Cygnus, European ATV and Japanese HTV and any other such craft. From the moment they ...
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1answer
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Are there really “Dead End” signs on the outside of the International Space Station?

This question currently links to the NASA video Expedition 63 Inflight interview with Yahoo Finance KPRC TV - July 24, 2020 at 07:46 where a few seconds later ...

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