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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Do astronauts on the ISS refer to themselves as standing?

When on the CEVIS,(Cycle Ergometer with Vibration Isolation Stabilization) I'm assuming the astronauts would say they are sitting. When they secure their feet under a blue IVA rail do they say they ...
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Door to vacuum on the ISS

Provided I had superhuman strength and the ability to open a door even with one atmosphere working against me, are there any singular doors or windows on the ISS which I could open directly to vacuum? ...
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Would ISS raise up with the help of the self-powered ion thrusters?

The solar arrays provide about 100 kW of power, so we can put the two HiPEP thusters providing 1 N (1000 mN) power combined, with the specific impulse as high as 6000–9000. Such an acceleration force ...
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Would it be possible to Boost ISS to L1 or Lunar Orbit?

NASA and Russia plan to retire the ISS before 2030, and to launch a new lunar outpost to lunar orbit. This output could then be a gateway to future mission to Mars or the outer solar system. My ...
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When might we get fourteen people in space?

The record for the number of people in space at one time is thirteen, which has been set a few different times (as discussed in this question, this other question, and this article). In order: March ...
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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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Which type of Power Plug do we use on the ISS?

The following map shows the different types of power plugs and sockets used by countries all over the world: The International Space Station (ISS) is a joint project between five participating space ...
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Crew Positioning in ISS during Reboost

Several questions address the reboosting procedure for the ISS. When the shuttle reboosted the station, apparently the entire ISS was modeled on the ground and pre-programmed in, down to the masses ...
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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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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 commentor asked the title question and was encouraged to make it a new question, but apparently never did. The linked question is referring ...
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How do we use Fire Extinguishers to Control Fire in the Space Station?

In this NASA Webpage for Fire Prevention in Space, it is given that If a fire were to occur on the ISS, the astronauts would become firemen and follow a three-step response system. First, they ...
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How was the Space Shuttle Orbiter used for ISS Reboost?

According to this answer, for the question How often does ISS require re-boosting to higher orbit?, During Space Shuttle years, small re-boosts were also performed by the Shuttle Orbiters (...
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What is the “space grease” used to lubricate the ISS robotic arm? What are the material considerations for it?

Space.com's Spacesuit Gloves Contaminated During Friday's Historic Spacewalk quotes NASA astronaut Christina Koch (Wikipedia, NASA): "And so," she continued, "of course, a mechanical component like ...
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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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How are astronauts in the ISS protected from electric shock?

On Earth, most of the electrical appliances having exposed metal parts, such as electric iron, are grounded, to protect the user from electric shock when an uninsulated-wire accidentally comes into ...
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When will ISS return to approximately the same projected location on Earth's surface?

The ISS sailed over my country, Sri Lanka on the eve of yesterday (14th October), and there was some news coverage on the event. While the reporting wasn't particularly scientific or even factual (I'm ...
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What (if any) replacement parts have been 3D printed on the ISS and then installed?

The Phys.org article Six degrees of nuclear separation contains the following sentence in the introduction paragraph for background Astronauts now print their own parts in space to repair the ...
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Does reflected sunlight from the ISS prevent astronauts from seeing the stars during an EVA?

I'm assuming during an EVA when an astronaut is facing the station reflected sunlight reduces an astronaut's dark adapted vision to the point they can no longer see the stars until either the station ...
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Why doesn't the ISS have more oxygen generators?

According to this article, the O2 reclamation on the ISS is capable of producing about 2kg of O2 per day. However, crews need slightly more than this. What is preventing NASA/Roscosmos/anyone else ...
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Colors of the ISS solar panels?

What color(s) does the solar panels on the ISS look like the human eye through either a spacecraft window or helmet visor? The solar panels look a different in different photos. ESA website NASA ...
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What protocol is in place if an astronaut kills another astronaut in or around the ISS?

Say one astronaut murders another astronaut in or around the ISS, what would happen? Are there any protocols or instructions about what to do? Calling the space police does not seem like an option.
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Did CNSA astronaut Zhai Zhigang see the ISS during an EVA?

This answer to Has an astronaut ever seen another object in LEO pass by that wasn't mission-related? says: The encounter happened at longer distances ($\sim47\;km$) and the Shenzhou-7 is smaller ...
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Term used to identify the blue bars/rails in the ISS?

The interior of the ISS is filled with blue bars used by astronauts to secure their feet and remain in one place. Does NASA have a term for these?
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Do astronauts use their toes to grip with in zero gravity?

Feet and toes are not usually as dexterous as hands and fingers but they can grip and hold things. With training and practice they can be like third and fourth hands. Are there any astronauts who make ...
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Tracking the Soyuz MS-15 approaching the ISS with binoculars

Next Wednesday, September 25th, the Soyuz MS-15 will be launched from the Baikonur cosmodrome. I guess the trip to the ISS will be long (6 hrs to 24 hr) as usual. I want to see both the ISS and the ...
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What are these two SPHERES doing?

In her tweet ISS expedition 59/60/61 astronaut Christina Koch shows two SPHERES doing something. What are they doing exactly? Why do they appear to be connected? Had a blast cheering on the ...
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Assuming MLM/Nauka is launched, what happens to MRM-1/Rassvet?

For the purposes of this question, assume Russia's Multipurpose Laboratory Module (MLM/Nauka) gets launched and makes it to the ISS. Most articles I read say the MLM will dock at the FGB's nadir ...
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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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What are the key dimensions of the new IDA docking ports on the ISS?

I'm building a 3D model of the power and propulsion module of the Lunar Gateway, and I'm trying to establish a few dimensions so it's easier to make it accurate. It seems from the artwork that it uses ...
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Is the BEAM module as good as a rigid module in terms of radiation/thermal properties?

It seems that NASA is going to stick with the BEAM module on the ISS for quite some time, and is currently using it for storage. That's pretty cool. However, I was wondering if the BEAM module could,...
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What happened to 2 of the 3 radiators on P6 on the ISS?

Source: nasa.gov; modified What happened to 2 of the 3 radiators on P6 (solar array) when P6 was moved from Z1 (the top) to its final position on the port side? Initially I thought 2 were removed ...
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Does the ISS yaw in orbit? And if so, why?

A NASA ISS reference guide (PDF; 37 MB) explains the use of reaction wheels -- Control Moment Gyroscopes (CMGs) -- to control the station's attitude/orientation. My understanding is the station is ...
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ESA's contribution to ISS: what has succeeded the ATV?

ESA's ATV cargo spacecraft was built and flown as part of ESA's contribution to the ISS operating cost. This program has ended. What has replaced it? Has ESA's financial contribution increased, or ...
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Feasibilities and challenges of these Orion + commercial lunar lander scenarios? [closed]

Suppose that US politicians want to fund a moon mission without SLS, using only hardware that is working now in 2019, using Orion together with some future moon lander supplied by the private sector. ...
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ISS DMA vs C&DH?

The Early design of the ISS specified a global Data Management System (DMS) for operations and management of Station software-dependant systems. The DMS was based on ISO/OSI standards for ...
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Are lithium batteries allowed in the International Space Station?

Lithium batteries have been restricted or forbidden on aircraft in some jurisdictions, after incidents of fires. Are lithium batteries allowed on the ISS? If so, why would the risk be considered ...
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Is there dust on ISS and how do they do cleaning?

Where are humans there is normally dust. It likes any more or less electrostatic surface. Is there dust at ISS and do they clean it beyond using air filters in the air system?
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Is the new RGB solid state LED lighting on the ISS ever set to colors other than white?

This answer to Why are these astronauts green? explains the new (now about 2 years old) solid state (LED) lighting modules being added to ISS interior lighting, replacing the fluorescent lights (see ...
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Can Astronauts really see firework displays from space?

ISS Expedition 59/60 astronaut Nick Hague tweeted: Sporting our red, white, and blue on @Space_Station!🇺🇸 Planning a “cookout” tonight. Beef patties, corn, blueberry cobbler, and lemonade are all ...
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How large of an antenna would you need to connect to the ISS's WiFi network from Earth?

Supposing I wanted to connect to the ISS's WiFi network from the ground, how large of an antenna would I need to do so, and what kind? Would they need to increase the power on their end or use a ...
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my height is 5 feet 1inch .i am an indian .i have got spectacles of shortsight . can i try for NASA after laser surgery? [duplicate]

My height is 5 feet 1 inch . I am an indian .I have high spectacle number . Can I try for NASA astronaut after laser surgery?
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Do astronauts on the ISS have to consciously keep their arms down?

After seeing many images of astronauts on the ISS sleeping, with their arms floating, and Chris Hadfield describing arms floating up and head titling forward How Do You Sleep In Space? | Video I ...
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What's this mini-cupola-looking object in this photo from the ISS?

(I went through this exercise for my own benefit, so I figured I'd post it) Recently stay-extended astronaut Christina Hammock Koch posted this image to Facebook today and the object indicated by the ...
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Is there an archive/database of ISS telemetry over time?

I'm trying to find a database of the ISS's telemetry (specifically, its pitch and yaw) over time. All I've found so far is live streaming, like http://www.telemetry.space/, which gives the realtime ...
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Does energy created from the crews mandatory exercise get used for powering parts of the ship [duplicate]

As the question states, I am wondering if energy created from for example a cycling machine get used for anything?
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What language is the Russian segment ISS software written in?

I have heard that the ISS uses a Russian coding language for some of the systems and subsystems on the Russian segment of the ISS. What is that coding language?
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How far would the ISS need to be to keep it's attitude with the earth from tidal forces without needing control moment gyroscopes?

I believe the ISS uses control moment gyroscopes (CMGs) to always have the same side facing the earth. How far from the earth does an object the size of the ISS need to be tidally locked with the ...
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What format is a “TSA Ephemeris?”

I am working on software that needs to parse an ephemeris file for the ISS. However, I cannot find any documentation for the particular format I have. The only mention I found is in this ...
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What makes Ada the language of choice for the ISS's safety-critical systems?

We have it on good authority that Ada is widely used for "safety critical software" on at least the US side of the International Space Station. Of all the possible languages to choose from, what are ...
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What language is software running on the ISS written in?

What is the coding language used for the software used on the ISS? Is it NASA's own coding language, or is it something like C, or C#, maybe Haskell?