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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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Has there ever been an astronaut that bailed out on going to space last minute?

I’m just wondering if any astronauts have gotten cold feet last minute and have refused to go into space.
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8answers
5k views

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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1answer
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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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0answers
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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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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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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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1answer
83 views

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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1answer
111 views

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
2k views

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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0answers
117 views

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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0answers
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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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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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2answers
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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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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
3k views

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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1answer
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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
802 views

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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0answers
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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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2answers
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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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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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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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1answer
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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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0answers
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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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1answer
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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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2answers
117 views

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
136 views

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
223 views

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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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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1answer
2k views

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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3answers
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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 ...
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0answers
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How are the payload limits of robot arms on the space station determined?

I have just been wondering how the payload limits for the arms on the ISS were determined. Any back of the napkin calculations to explain these? In that vein, I could not find any information on the ...
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6answers
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Was water ever taken outside a spacecraft?

Has an astronaut (or cosmonaut) taken water out of a spacecraft to see if it boils or freezes?
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0answers
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Would a space station be able to watch a world wide cataclysm and how long would the crew be able to survive for? [closed]

I know there is other questions with similar concerns about there being any protocols in pace if the crew of space station were to witness a world wide cataclysm and the survivability of the crew if ...
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2answers
409 views

Is the cupola, on the inside of the ISS, cold or warm to the touch?

Does the temperature of the surface of the cupola vary when the ISS is in Earth's shadow, compared to when it is on day side of the Earth? Is it cold to the touch when the ISS in the shadow?
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9answers
11k views

Which country borders are visible from space?

You can see the borders of North Korea with China and South Korea at night from the ISS since unlike their neighbours, they have almost no light. That got me thinking, which other country borders (of ...
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1answer
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What is a brake handle on the ISS crew equipment carts?

Outside the International Space Station, there is a device called a brake handle on the crew equipment carts. I couldn't imagine that device, what is it and what is it for? I found it in the book of ...
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1answer
139 views

How does SpaceX's Dragon get to the ISS?

How does SpaceX's Dragon capsule get to the ISS? Does Dragon use the onboard Draco thrusters in order to raise its orbit to the station or does the second stage of the Falcon 9 perform the majority of ...
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0answers
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Is the ISS in danger of the outer radiation belt?

Is the ISS in danger of the outer radiation belt? I know that the ISS is in the low earth orbit and that it briefly passes through the base of the outer RB, but it is actually in danger? How does the ...
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0answers
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ISS reboost cost

The most updated data available at spaceflight.nasa.gov show that on day 361 there was a reboost: IMPULSIVE TIG (GMT) M50 DVx(FPS) LVLH DVx(FPS) DVmag(FPS) IMPULSIVE TIG (MET) M50 DVy(...
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Can I text on my cell phone from the ISS to Earth?

We know from Can we detect the cell phone, satellite phone, or walkie talkie of someone walking on Mars from Earth? that cell phone signals on Mars are potentially observable on Earth. I am not an ...
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1answer
78 views

How Is The Quest Joint Airlock Operated?

I have searched and searched and cant seem to find any media whatsoever that explains or outlines exactly how the airlock is operated. What exactly is the process you go through to open it, do you ...
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1answer
95 views

What's the largest screen for watching videos on the ISS?

There are many laptops on the ISS, for controlling non-critical things and for personal use during free time. Even at least one iPad. Are these the largest screens available? If the crew wants to ...
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1answer
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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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Which engine worked the hardest to keep the ISS in orbit?

The ISS has spent two decades fighting drag caused by its large size and huge solar panels pushing through the tail-end of Earth's atmosphere only a few hundred kilometers above its surface. Question:...
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1answer
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How long could a spacecraft be attached to ISS?

I've recently noticed how the "Design life, when docked to Space Station" parameter, varies across some of the modern spacecraft that are capable of docking to ISS these days: H-II Transfer Vehicle - ...