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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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Just how record-setting was the launch-to-docking time of the April-4-2019 Progress resupply mission?

Digital Trend's article 3-plus-hour supply trip from Earth to International Space Station breaks record mentions that this was even faster than the typical "fast-track" Russian launch-to-docking time ...
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How would a mousetrap for use in space work?

To the question If mice escaped on the International Space Station, could they live and thrive? both the answer and comments point out that while mice escaped from an experiment might survive a while ...
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How will Robotic Refueling Mission-3's liquid methane tank remain full for six months without any boil off?

Space.com's Lasers, Crystals and 36,000 Worms Will Ride a SpaceX Dragon to Space Station says: To fly on those journeys, astronauts might have to someday harvest fuel from the surface of the moon ...
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If mice escaped on the International Space Station, could they live and thrive?

The SciNews video Mice aboard the International Space Station is fun to watch for those tired of the same old rocket launch videos. Behavior of mice aboard the International Space Station 20 ...
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How many laptops onboard ISS?

About how many laptops are there on board the ISS? I saw the header image in this article: https://www.nytimes.com/2019/04/11/science/scott-mark-kelly-twins-space-nasa.html?partner=rss&emc=rss and ...
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1answer
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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 (...
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What's the baseball bat for? (seen in CRS-8 berthing NASA TV broadcast)

Watching the CRS-8 Berthing live broadcast on NASA TV I noticed a baseball bat resting on top of a console in the front left part of the room, so I took some screenshots. Looking closer, it seems to ...
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How well can the ISS attitude control system detect periods of astronaut activity?

The question Why doesn't ISS start to spin if people walk inside? is a good one partly because it has attracted several good, informative answers. One of them is particularly intriguing because it ...
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1answer
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What's the soonest after ISS arrival that an astronaut has gone on a spacewalk?

I've just read in the New Jersey Herald: Two new arrivals at the International Space Station went spacewalking Thursday less than a week after moving in. NASA astronauts Drew Feustel and Ricky ...
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1answer
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How to replace and refurbish the EMU suit used at the ISS?

If new parts for the EMU suits should be transported to the ISS they may use the Progress cargo space ship. But what about return of used suit parts to ground for refurbishment? A Progress cargo ship ...
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How old are the EVA space suits that are currently used on the ISS?

Scott Manly says in his new video Updates - JPL Visit, Mars 2020, Moon in 5 Year, EVA Changes, Indian ASAT after about 03:25 that the EMUs that NASA uses are ...
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How similar are Soyuz and Progress?

Superficially the Soyuz and Progress spacecraft look very similar: (Soyuz TMA-7) (Progress M-52) So it would be easy to imagine that they share a common service module and/or orbital module. But ...
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1answer
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What steel ball was thrown out of the ISS to help test how well ground stations can track orbital debris?

The question What kinds of things have been tossed out of the ISS? has a broken YouTube link. This is why it's good to include at least the name of the video in your post (which I didn't back in 2016)....
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How frequenty have space walkers been changed based on space suit configuration?

On Friday, March 29, two astronauts were supposed to conduct what would have become the first all female space walk, Christina Koch and Anne McClain. After her first space walk on March 22, Anne ...
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1answer
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How is Dragon-v2 prepared for being docked for months at ISS?

The Dragon spacecraft is being certified for manned spaceflight. If it's to replace Soyuz, though, it will have to serve as an escape pod for the crew. The current delivery missions are proving its ...
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Is a Moon-base inherently more dangerous than a Space Station?

Living in space is pretty dangerous, and the wonderful people of the ISS float around the Earth at risk of radiation and micrometeoroids. I'm curious if they're any more safe than if they simply were ...
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How does electrical safety system work on ISS?

Is there any possibility that the power consumption is greater than power supply on ISS? What happens (or potentially would happen) if we plug too many electric devices so that ISS couldn't handle it? ...
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Is there any money in space?

Currently everything used by astronauts in space gets there via a state/government sponsored lift. Astronauts can also bring a few personal supplies, but I imagine that most if not all financial ...
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28V vs. 124V on the ISS

Apparently the US segment of the ISS runs on 124v DC, while the Russian segment is on 28v DC. Why the difference? I understand it is often safer to have several different voltages rather than one, but ...
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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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How do ISS astronauts “get their stripes”?

This answer shows two astronauts on a spacewalk outside the ISS. The caption reads: Rick Mastracchio as EV1 (red stripes) and Mike Hopkins as EV2 (no stripes) leaving the airlock during US EVA-24 (...
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1answer
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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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How many people could the ISS support?

How many people can fit on the ISS? At what person would life support be overwhelmed?
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What is the orbital boost acceleration of the ISS?

How much acceleration does the International Space Station experience during its orbital adjustment boosts? How much thrust and for how long? Bonus question: what is the highest acceleration that the ...
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Would communication with Houston still be possible in a LEO debris cascade?

In the film Gravity (2013), the astronauts on STS-157 & the ISS lose communications with mission control in Houston, supposedly due to the chain reaction of debris collisions taking out ...
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1answer
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How long is the ISS out of reach of all ground stations?

This is a followup to a recent question and answer discussing ground-based monitoring of the International Space Station, specifically in the context of an astronaut crew that is all asleep. How ...
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ISS location identification; estimate size and direction of astronaut acceleration puzzler

note: This question addresses the same video and phenomenon described in this answer (which I found after posting this) but here I'm asking for an analysis of the trajectories of the test masses (the ...
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1answer
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What is Earthy controling in the ISS cupola?

ScienceAlert.com's Astronauts on The Space Station Liked SpaceX's 'Earthy' Toy So Much They Kidnapped It shows a series of photos of Earthy, the new plushy member of the ISS crew. In the photo below ...
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Was Alexander Gerst the first man to have bare skin exposed to the vacuum of space and live?

On August 30, 2018, a hole was found in the Soyuz Orbital Module on the ISS. Astronaut Alexander Gerst initially plugged it with his thumb, meaning a part of his bare skin touched space. I can't find ...
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What is astronaut Alexander Gerst signaling with this K-shaped hand signal?

In this AP/WISN news item Air leak at International Space Station temporarily plugged by a thumb they show a file photo of German astronaut Alexander Gerst at the Baikonur cosmodrome, making what ...
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1answer
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Difference between “undock” and “depart” (SpaceX Dragon Mission 1); when did it leave?

Reading the Astronomy SE question Did I see the dragon capsule on Friday night? I thought I'd check some times. Wikipedia's SpX-DM1 says: ...
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1answer
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Can astronauts wear eyeglasses inside their helmets during launches and landings?

Are astronauts allowed to wear their eyeglasses inside their helmets during launches and landings?? Are there any special considerations or rules? During spaceflight (launches and landings) there can ...
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why do astronauts in the ISS still use wired microphones?

While I watched the DM-1 hatch opening, I noticed that astronauts use the wired microphone to talk to Huston. It was particularly strange seeing that even because during hatch opening, they were ...
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1answer
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What is Crew Dragon approaching in this picture?

Crew Dragon (without a crew) just docked to the ISS for the first time last night. Most of the news reports on it are using the below photo. I thought it was supposed to dock to the Harmony module's ...
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What are these green text/line displays shown during the livestream of Crew Dragon's approach to dock with the ISS?

During the livestream of Crew Dragon's approach to docking, at 6:24 a laptop display is shown with lots of green text and a camera view of the International Space Station. What's going on?
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How are airborne particulates monitored on the ISS? Are they distinguished at all by size and/or type?

The question What kinds of activities, experiment and, procedures done on the ISS must be done in chambers vented to space? links to and quotes from this answer to the 3D Printing SE question How is ...
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What kinds of activities, experiment and, procedures done on the ISS must be done in chambers vented to space?

This answer to the question in 3D Printing SE How is 3D printing done in space? says The first big space-specific issue is actually air quality. You can't just open a window to air out the molten-...
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1answer
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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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Plans for ISS crew to enter Crew Dragon?

Are there any plans for ISS crew to enter the Dragon V2 while it is docked during the upcoming Crew Dragon Demo 1 mission?
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How often has (or how common is it for) the ISS's orbit been propulsive lowered intentionally?

The question Which engine worked the hardest to keep the ISS in orbit? laments the tireless efforts to keep the ISS from falling from the sky by regularly executing propulsive orbit-raising maneuvers. ...
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What are the consequences to breaking the ISS?

Suppose a relatively minor space faring government or a private company had permission to dock with the International space station. But then, due to their incompetence they caused a major problem. ...
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How does SpaceX plan to obtain Oxygen in Mars?

In the ISS they obtain Oxygen from water through electrolysis. I guess this could be possible in Mars if they land near a large water source. NASA in the other hand, it's working for ways to obtain ...
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Can they isolate individual modules on the ISS?

In the event of a leak, in the cupola for example, can they isolate individual modules of the ISS?
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1answer
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When reading “the writing on the wall” in the ISS, which way is up?

This answer to the question Is there really no difference between up and down in ISS? says: ISS does have a sort of 'up and down', deliberately created as part of the design. All the modules ...
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What's the shiny triangular feature on this Progress vehicle?

Picture from here What's the shiny, slightly curved triangular plate with rails above it? A larger version, cropped from here, thanks to a comment by ohsin.
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1answer
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Why do the ISS' Thermal Rotary Radiators need to tilt?

This answer shows the first image below of a vintage view of the ISS. Only one of each triplet of thermal radiators is extended from each TRRJ. The ISS' solar panels articulate to modulate the ...
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1answer
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Heat balance of the ISS: breakdown?

Is there available breakdown of the heat balance of the International Space Station? In particular: How much heat is produced? by direct warming by sun by warming of solar panels (heat for the ...
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What are these stacked panels on the ISS in this image?

I found this image of the ISS in a folder on my computer. I don't know the exact source but a reverse image search shows it in many different websites. Unfortunately I can't pin down a date. What are ...
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Why are the big solar panels on the ISS orientated away from the Sun? [duplicate]

While looking at this picture below from another question I notice all the panels are not facing the Sun. Why is that?
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How do astronauts keep their devices dry?

In these videos astronauts are drinking and playing with water. We can see water droplets floating away to the surroundings. Do these droplets affect the machines in any way? What do astronauts do to ...