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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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How closely can ground control monitor ISS astronauts?

How closely can ground control monitor astronauts aboard the ISS. Are there cameras or microphones that the ground can use to see and hear what's happening, or are they reliant on the crew to relay ...
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1answer
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Is ISS ever visible at all on the earth, unaided, by full moon moonlight alone?

Assuming ideal conditions of moonlight and phase angle, is the ISS ever even slightly 'visible' by full moon moonlight alone, that is to say, when the station is not in direct sunlight at all, but ...
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Would adding a long pole to the International Space Station keep it from tumbling via gravity gradient stabilization?

What things can be done mechanically to make the ISS more stable in a dormant state without a crew? I have listed a couple of links that may work, but I am open for constructive criticism and new ...
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Would recovery from these three problems on the ISS each require astronauts on board?

YouTube auto-played this to me after Scott Manley. I don't really recommend this channel as there are a lot of small errors due to the speaker's unfamiliarity with the science and mis-speaks like ...
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Has the answer to PopSci's question “How Many Years Does The Space Station Have Left?” been published?

This answer to the question Why does the ISS have to be destroyed? begins It doesn't, not really, but there will come a time when it will simply not be worth keeping it up. and mentions a study, ...
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1answer
144 views

What is the likely plan to deorbit the ISS given its size and shape?

The ISS is nearing its final years and this question spurred me to ask a follow up. Let's say that the various countries grab whatever equipment/modules they provided in assembly and the ISS is ...
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130 views

When was the ISS's “SPEED LIMIT 17500 MPH” sign originally posted?

When was the ISS's "SPEED LIMIT 17500 MPH" sign originally posted? above: "STS110-353-012 (8-19 April 2002) --- Astronaut Ellen Ochoa, STS-110 mission specialist, poses by the speed limit signs in ...
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4answers
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How exactly will the ISS die in 2025?

According to: ”Moreover, the ISS end of life might come in 2025, and assuming you need a few years to graduate, more to get a degree, work experience, get hired, do the training... The ISS might ...
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Has the ISS done any experiments on animals gestation such as mice? I particularly would like to know about embryo development in microgravity

Has the ISS done any experiments on animals gestation such as mice? I particularly would like to know about embryo development in microgravity
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1answer
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Is there an onboard video of the Soyuz MS 10 launch?

Does anyone know a link to the video obtained from the Soyuz "outboard" camera showing the separation of the side boosters of the Soyuz MS10 launch?
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1answer
129 views

What brand and model is the hand-held sextant tested on the ISS?

Astronaut Alexander Gerst is testing an hand-held sextant on the ISS in the context of the experiment Sextant Navigation for Exploration Missions, see picture below. What is the brand and model of ...
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1answer
138 views

Could the International Space Station be fitted with solar sails?

How much solar sail and vane surface area would be needed to replace the boosts needed to keep the ISS in orbit? Could this be done at a higher orbit minimizing atmospheric drag? What is the closest ...
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What are the consequences of leaving ISS with no crew? [duplicate]

To my knowledge temporarily abandoning the ISS is one of the possible options. (Though not the most probable one.) If left peopleless, how long can it stay in orbit without proper maintainance and ...
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2answers
745 views

Which Earth time zone most closely matches the ISS astronauts' daily schedule? [duplicate]

The astronauts on the International Space Station have a daily schedule, particularly when they are asleep versus awake. Which Earth time zone is closest to their daily schedule? What time zone is ...
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1answer
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What are the reasons Soyuz's lifespan in orbit is limited?

Following the recent Soyuz failure news, I found out that the currently docked Soyuz expires in the foreseeable future, leaving the crew with no means to return back to Earth. What are the reasons ...
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1answer
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Where can I find detailed information on spacewalks?

I am looking for detailed (as detailed as possible) information on the various space walks carried out on ISS. If I can get minute-by-minute steps taken, which bolts were turned, which wires were ...
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2answers
477 views

How would the International Space Station be maintained unmanned?

Russia's lunch to the ISS failed and the crew may have to leave it unmanned. How would the ISS run without a crew? Could some one else take it over or squat in it? https://www.npr.org/2018/10/11/...
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Is this a photo of today's Soyuz anomaly happening in flight seen from the ISS? What are the little dots?

ISS Exp. 57 Cmdr. and ESA Astronaut Alexander Gerst's Tweet today says: Glad our friends are fine. Thanks to the rescue force of >1000 SAR professionals! Today showed again what an amazing vehicle ...
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What eliminates the velocity when occupants return from ISS to earth, and how much?

The ISS has an orbital velocity of ~28000 km/h; the velocity $v$ relative to the landing site of the descent module is probably even higher than that most of the time. Once the occupants have landed, ...
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1answer
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Can crewed rocket programs be accelerated in light of the Soyuz failure?

This morning a crewed Soyuz booster failed, causing the crew to return to Earth, as the capsule was not in orbit yet. With this being the second failure of a Soyuz rocket in two years (a Dec 2016 ...
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8answers
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How can I, a high school student in Bucharest, go on to become an ISS astronaut?

I study at a High School in Bucharest, and I want to know what kind of education or subjects I need so that I can work in an International Space Station and stay there for 6 months. In the high ...
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Will SpX-DM1 (Crew Dragon demo mission) carry any useful cargo (supplies)?

To adequately simulate crew transport, the Dragon 2 should at least carry mass simulators of mass equivalent to that of the astronauts. Will it? Will it be dummies or some useful cargo? Would be a ...
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Does the International Space Station get TV?

For obvious reasons the ISS cannot get cable TV. Can the ISS get the new digital air TV or satellite TV using an issued dish and receiver like a house? How would that be done compared to how it is ...
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1answer
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How is the docking hatch on the Progress/ATV opened?

Normally during the Progress or ATV hatch opening procedure the crew inside the ISS turn a handle to unseal the SSVP drogue cover which they then pull inward, revealing the Progress docking probe and ...
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1answer
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Do astronauts have to use sunscreen?

Of course the space suits can block most part of the radiation, but do the astronauts need to use sunscreen to protect their faces from the radiation passing thought the helmet or passing through the ...
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1answer
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How does this ISS vision-testing instrument work? What exactly is being measured, and how?

This tweet by Surrey Satellite engineer Enguerran Petitfils says Astronaut Serena Auñón-Chancellor Examines Her Eyes via NASA https://ift.tt/2NmEt6k What is this device exactly, how does it work,...
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3answers
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This image of the Space Shuttle is truly beautiful, but is it real?

I saw this image in the Infobae article La NASA probará un paracaídas para posar naves espaciales en Marte ("NASA will test a parachute to place spaceships on Mars"). The image looks plausible to me, ...
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1answer
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Is this window zenith-facing? (ISS docked Soyuz) If so, how directly?

Pursuant to the question Does the ISS have zenith-facing windows? to which the conclusion (in my opinion) is that there may be a window that provides an oblique view that might include the zenith if ...
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141 views

How many leaks have been fixed on the ISS, roughly?

Leaks come in all sizes. Very small ones might be ignored or remain undetected, slightly faster ones might be identified and dispositioned; if they are slow and going to remain stable, they might not ...
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1answer
265 views

What is the big hole next to the 2mm hole that caused the 2018-08-30 Soyuz MS-09 / ISS leak?

The small hole in this picture is being reported as the cause of the ISS leak. What is the large hole next to it on the perpendicular surface? The one that appears to have been drilled by an amatuer ...
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2answers
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What are these antenna-like structures seen in Oleg Artemyev twitter video?

Russian Cosmonaut Oleg Artemyev's Sept 3, 2018 tweet has a narrated video of Earth from the ISS, at the time over the Nile river. The video is also in YouTube (below). At the bottom of the screen, ...
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2answers
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How does automated docking work and why isn't it used more often?

It seems on every flight to the ISS for either people or just cargo, there is always a big deal over manual docking, lots of back and forth over comms, pinpointing the right spot, slowing down in a ...
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How could the 2018-08-30 Soyuz MS-09 / ISS leak be so slow?

The leak reportedly led the ISS to lose 0.8 millibars of air pressure per hour, which is both big considering what was at stake and low for a 2-mm hole when the outside is near to complete vacuum. Am ...
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Did NASA “publish”, then “delete” this and other photos of the ISS leak?

A tweet by @NASASpaceflight (Chris B - NSF, "Managing Editor of NASASpaceFlight.com" says: ISS Leak summary: First thought was MMOD strike. Then NASA released pics. Lots of people: "Hmmm,...
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How far/much time could an appendage extend outside of the ISS before succumbing to severe damage?

I was reading the question asked here in regards the Alexander Gerst's patching of a small (5mm) hole with his thumb temporarily. This got me wondering, if his thumb was only fine because the majority ...
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2answers
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Was Alexander Gerst the first man to touch space with his bare skin 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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Is telerobotic surgery logistically feasible in orbit?

A recent comment said telerobotic surgery might be used in space, a follow up comment said that multiple minute light delays would complicate it. But I wonder if just the fact that being in orbit, ...
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1answer
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Do Astronauts have their appendix removed?

A recenct article on the BBC news got me wondering about Astronauts in the ISS. technically they are fewer miles from the closest hospital, but the transportation is bit more complex. Imagine that ...
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What is astronaut Alexander Gerst signaling with this 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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3answers
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August 30th 2018 Soyuz leak, any dangers for re-entry?

On August 30th 2018, Soyuz MS-09 had a leak that was fixed by the ISS crew (source). Does the leak/fix have any consequences on using the Soyuz for returning to Earth? Would the fix hold the stress ...
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1answer
250 views

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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I'm not sure if what I've seen is the ISS or not

Can the ISS be seen clearly with the naked eye at dawn? I think that it passed over my location, and I barely saw the 4 solar "wings" as well, but I'm not sure of the last part, because people say ...
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Would a lower LEO ISS orbit really have a shorter eclipse duration than a higher one?

This comment says Lower orbit also mean shorter ones; for observations (one of the ISS missions) it is an advantage. It also have shorter night times (ie smaller batteries).. and the likely ...
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1answer
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Does the ISS still “need” to be at around 400 km?

The video Why is the International Space Station 400 km above the Earth? first mentions that there are fairly hard limits at 300 km (due to imminence of reentry) and 700 km (loss of protection from ...
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Does ISS get a surplus of oxygen or water?

[overhauling the question to get rid of misconceptions, which were irrelevant anyway] In the balance of input/output of the system ISS is, I spotted something that looks like build-up of stockpile of ...
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5answers
240 views

Are there any examples of a reduced-gravity sporting event or match being played in space?

I created the reduced-gravity-sports tag because I see it as both technically/scientifically interesting, and likely to be really big in the future. So now I'd like to ask: *Are there any examples ...
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0answers
251 views

Why did the Chinese put the Tiangong-2 so high?

The most obvious answer is that they don’t want to deorbit the station shortly, but why? Some calculations with the TLEs and SGP4 show the following Tiangong-2 / ISS close encounters: ...
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1answer
145 views

International Space Station consumables shelf life duration

Most of ISS crew consumables are designed for a long store period. I couldn't find any info - what are shelf life durations for the consumables? What are typical shelf life in ISS storage for: ...
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1answer
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Will Astrobee be the second time that an autonomous, mobile robot will use ROS in space?

The question ROS is running on the Robonaut, but is the Robonaut running on the ISS (post 2015)? asks about Robot Operating System or ROS. In the Art Technica video Talking Space and Robots with NASA'...
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1answer
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How will Icarus aboard the ISS track bird migration?

The question Is it possible to see animals from space? has several answers, and they are all based on optical imaging. In this answer I describe and show images from the First count of individual ...