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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 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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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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ISS - Tiangong 2 minimum safe distance

Using the SGP4 propagator, I calculated the minimum distance between ISS and Tiangong-2 for this year. I obtained 12.32 km for 2017-09-27 17:29:36.376 UTC (which is the day 270.7289). I used the TLE ...
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Why is there no common “docking” interface for express rack payloads?

It seems strange to me that given all of the concerns about living space and color palette aboard ISS, the data/power/cooling ports for different mid-deck locker equivalent (MLE) express rack payloads ...
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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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Common Berthing Mechanism Dimensions

I've found detailed information on the International Docking Standard, enough to start work on a detailed CAD of the mechanism. (http://www.internationaldockingstandard.com/download/...
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Why would the dual keel space station design have been more stable?

According to the space station Freedom wikipedia page and this reddit thread, a dual keel structure would have been more stable than the final ISS design. Can someone explain why? And if a gravity ...
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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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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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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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How many ways of communication with ground can ISS crew use?

I'm currently writing fictional story which is happening at ISS and I have so many questions about this topic, but this one is the most important to me. How many possibilities of communication they ...
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What are the disturbing torques on the ISS?

What are the orders of magnitude of disturbing torques on the ISS itself, preferably split into the following categories, but any numbers (with source) will be useful: Gravity gradient Magnetic Solar ...
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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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Has the psychological impact of social media exposure for astronauts aboard ISS been studied?

Given the "recent" (few years) exposure and access of astronauts/cosmonauts aboard ISS to social media in order to communicate with the general public, I was wondering if the decision to allow them to ...
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Do the ECLSS components aboard ISS deteriorate at the same rate as they would on Earth?

Just what the title states. Wikipedia writes to say about the ECLSS (Environment Control Life Support System) The highest priority for the ECLSS is the ISS atmosphere, but the system also ...
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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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Has the monthly average skin temp of the ISS increased during its years in orbit?

Is there a source of monthly average sun-side maximum temperatures during its (ISS) years in orbit?
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How do you replace an ISS window assembly on orbit?

The eoPortal document Cupola Observation Module of the ISS found in @Dragongeek's answer to What are the two orange tabs stuck on opposite edges of each window of the ISS cupola? has some interesting ...
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ISS mass gain or loss due to meteoroids, solar wind, and other particles?

A few questions about the mass of the ISS (1, 2, 3) have got me thinking about mass change of the ISS due to natural processes. The ISS has quite a large area exposed to space, and is subject to both ...
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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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Can I freshen my clothes on the ISS with a clothes line?

There are a number of questions about washing clothes on the ISS, the short answer is that they do NOT wash them. Nudism in space: Why wear clothes anyway? Washing clothes in space: are there any ...
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Data and information security aboard the ISS in terms of public photos?

I was looking through a couple posts that had on-board pictures of the ISS and noticed something almost immediately: They have information (which could be sensitive) shown on the laptops: While ...
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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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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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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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What are the chances that the ISS transits the moon as seen from your house (or headquarters)?

In this answer I tried to do a simple probablistic estimate on the distribution of the ISS's ground track passes over Earth's equator. Recently there is a photo of the ISS passing over SpaceX ...
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What level of radiation protection do electronics on the ISS or in LEO need?

The harsh radiation environment in space requires that electronics on spacecraft be "radiation hardened." However, the radiation environment in LEO is not as intense as say a spacecraft traveling ...
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How much payload could a manned Dragon return, if unmanned?

The first mission to the ISS by Dragonrider (and CST-100) is expected to be unmanned. That means when it returns, it will have ability to return a full cargo load. Of course, ISS payloads are often ...
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378 views

What are the masses of the docking / berthing mechanisms used by the ISS?

I have been unable to find any information on the masses of the docking / berthing mechanisms used by the ISS. What are the masses of the APAS-95, Active / Passive Common Berthing Mechanism, and ...
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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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Are there any pictures of Iridium flares from the ISS?

As the title states, are there any pictures of Iridium flares from the ISS? Related: How much longer will we be able to see Iridium satellite flares?
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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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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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What would be needed for ISS to function in lunar orbit?

Not only the Chinese are rather unimpressed by the concept of "Lunar Gateway", which is summed up as a much smaller ISS in the Moon orbit. It made me wonder - wouldn't it be better to move ISS into ...
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Will Nasa take the opportunity for another one year ISS mission now?

Since the Soyuz MS-10 in October will only have two persons aboard, it would be a great opportunity for space science on the ISS to let Richard Arnold continue his mission for another 6 months until ...
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How does methane waste produced by the ISS interact with our Atmosphere?

The ISS uses a Sabatier reactor to recover oxygen from carbon dioxide. This has an output product of methane. I would imagine that most methane that enters our atmosphere at ground level only reaches ...
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How exactly does the live feed from ISS work?

Using my cell phone in a city to download lots of data very fast is common, thanks due to the dense net of base stations close to me (~1 km). But with the space station about 400 km above ground and ...
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Can astronauts on an EVA communicate directly with ground stations?

Can astronauts/cosmonauts performing spacewalks at the International Space Station communicate directly with radio stations on the ground (even if only as a back-up)? Or do they need to relay their ...
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If the ISS hull were ferromagnetic what kinds of problems would that cause?

The question ISS Electromagnetic anchoring asks if the hull of the ISS were ferromagnetic, which would allow astronauts on EVAs to use magnetic grapples to assist in moving around. The answer sadly, ...
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what brand/make is the laptop articulated arm in sleeping pod?

I saw a video of Sunny Williams she moved the laptop around. Go to time position 1:34. Is this articulated arm available to purchase for consumers on Earth?
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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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What is this NASA Spaceflight article trying to explain?

The NASA Spaceflight article Extended Russian EVA complete – conducts satellite deployments contains a very long discussion about the timing of the CRS-12 launch. Had it missed the "single shot launch ...