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What language is software running on the ISS written in?

What makes Ada the language of choice for the ISS's safety-critical systems?Which operating systems is the International Space Station running?What space applications, projects and agencies are using the Ada programming language?Is the software running on any existing or decommissioned space probes available for download?What software can be used to determine deep-space trajectories?What software language was used to program the martian rovers Spirit, Opportunity and Curiosity?What language is most commonly spoken on the ISS?Software development for ApolloSimulation software for AOCS/GNC?What is the most popular programming language in space?What does the software quality process for NASA's SLS look like?Has in-flight software changes ever involved a change of programming language?What makes Ada the language of choice for the ISS's safety-critical systems?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

37

4

$begingroup$

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?

iss software

share|improve this question

edited Jun 4 at 12:11

Wrigglenite

1156

asked Jun 3 at 1:27

repl userrepl user

3671212

$endgroup$

• 
  
  
  

  
  8
  

  
  
  
  
  
  

  
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  Don't forget one of my least favorite languages, Ada.
  $endgroup$
  – Organic Marble
  Jun 3 at 2:35
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Related: space.stackexchange.com/q/14605/6944
  $endgroup$
  – Organic Marble
  Jun 3 at 10:42
  

  
  
  
  


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  1
  

  
  
  
  
  
  

  
  $begingroup$
  Related: space.stackexchange.com/q/13539/6944
  $endgroup$
  – Organic Marble
  Jun 3 at 11:32
  

  
  
  
  


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  "The software" - makes it sound like there's a single monolithic program running everything. This won't be the case. There will be hundreds of subsystems, each with several levels of hardware and software automation, each of which will have been built with on a number of tools, technologies, and platforms.
  $endgroup$
  – J...
  Jun 3 at 15:44
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
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  @David I know. Well, at second hand. At one point I worked on a particle physics project where we were going to weld some embedded boards into a big steel can, and we have a series of seminars given by NASA reps on how you try to achieve reliability when you can't stick a paperclip in the reset hole. As a self-aware programmer the whole business is very scary because I know I'm not automatically that good.
  $endgroup$
  – dmckee
  Jun 4 at 22:31
  
  

  
  
  
  

 | 
show 3 more comments

37

4

$begingroup$

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?

iss software

share|improve this question

edited Jun 4 at 12:11

Wrigglenite

1156

asked Jun 3 at 1:27

repl userrepl user

3671212

$endgroup$

• 
  
  
  

  
  8
  

  
  
  
  
  
  

  
  $begingroup$
  Don't forget one of my least favorite languages, Ada.
  $endgroup$
  – Organic Marble
  Jun 3 at 2:35
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Related: space.stackexchange.com/q/14605/6944
  $endgroup$
  – Organic Marble
  Jun 3 at 10:42
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Related: space.stackexchange.com/q/13539/6944
  $endgroup$
  – Organic Marble
  Jun 3 at 11:32
  

  
  
  
  


• 
  
  
  

  
  9
  

  
  
  
  
  
  

  
  $begingroup$
  "The software" - makes it sound like there's a single monolithic program running everything. This won't be the case. There will be hundreds of subsystems, each with several levels of hardware and software automation, each of which will have been built with on a number of tools, technologies, and platforms.
  $endgroup$
  – J...
  Jun 3 at 15:44
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  @David I know. Well, at second hand. At one point I worked on a particle physics project where we were going to weld some embedded boards into a big steel can, and we have a series of seminars given by NASA reps on how you try to achieve reliability when you can't stick a paperclip in the reset hole. As a self-aware programmer the whole business is very scary because I know I'm not automatically that good.
  $endgroup$
  – dmckee
  Jun 4 at 22:31
  
  

  
  
  
  

 | 
show 3 more comments

$begingroup$

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?

iss software

share|improve this question

edited Jun 4 at 12:11

Wrigglenite

1156

asked Jun 3 at 1:27

repl userrepl user

3671212

$endgroup$

share|improve this question

edited Jun 4 at 12:11

Wrigglenite

1156

asked Jun 3 at 1:27

repl userrepl user

3671212

share|improve this question

edited Jun 4 at 12:11

Wrigglenite

1156

asked Jun 3 at 1:27

repl userrepl user

3671212

edited Jun 4 at 12:11

Wrigglenite

1156

edited Jun 4 at 12:11

Wrigglenite

1156

asked Jun 3 at 1:27

repl userrepl user

3671212

asked Jun 3 at 1:27

repl userrepl user

3671212

2 Answers
2

active

oldest

votes

54

$begingroup$

Almost all of the safety critical software that runs on the US side of the Space Station is written in Ada. I wrote "almost all" rather than "all" because there are probably some low level device drivers written in assembly. I can't find out in which language / languages the code that runs on the Russian side was written. I wouldn't be surprised if that also is largely Ada.

Non-safety critical software (e.g., anything running on a laptop) is written in a mix of languages.

share|improve this answer

answered Jun 3 at 4:29

David HammenDavid Hammen

33.7k280147

$endgroup$

• 
  
  
  

  
  19
  

  
  
  
  
  
  

  
  $begingroup$
  Wow, this makes me curious as to What makes Ada the language of choice for the ISS's safety-critical systems?
  $endgroup$
  – uhoh
  Jun 3 at 7:38
  

  
  
  
  


• 
  
  
  

  
  8
  

  
  
  
  
  
  

  
  $begingroup$
  @PearsonArtPhoto - If it's safety critical, yes. The safety critical software runs on the so-called Multiplexer-Demultiplexer (MDM) computers and critical display devices. Non-safety critical software runs on laptops.
  $endgroup$
  – David Hammen
  Jun 3 at 12:13
  

  
  
  
  


• 
  
  
  

  
  9
  

  
  
  
  
  
  

  
  $begingroup$
  What are your sources?
  $endgroup$
  – Bruno Pérel
  Jun 3 at 15:20
  

  
  
  
  


• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  $begingroup$
  @Bruno most likely inside information. (This person appears to work there)
  $endgroup$
  – Shadow Wizard
  Jun 3 at 20:36
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @Nefrin - That is true to some extent, and apparently more so in Europe than in the US. That the US Department of Defense dropped the Ada mandate 20 years ago led to many project managers having new projects be coded in anything but Ada.
  $endgroup$
  – David Hammen
  Jun 5 at 12:20
  

  
  
  
  

 | 
show 11 more comments

15

$begingroup$

There are a lot of programs involved in running the ISS. The exact details are difficult to discern, a lot of NASA's software is available via this site, with some restrictions, but here is what I can find.

• Astrobee- Runs the "Robotic Operating System"


• Geolocation via a Python Library


• Some elements use LabView

I'm sure there are many other languages, including C, C++, and C#, among others, but it would be very difficult to get a complete list.

share|improve this answer

answered Jun 3 at 2:45

PearsonArtPhoto♦PearsonArtPhoto

86k16250479

$endgroup$

• 
  
  
  

  
  10
  

  
  
  
  
  
  

  
  $begingroup$
  software.nasa.gov is where NASA catalogs it's released software. Much of the software for the ISS is not releasable.
  $endgroup$
  – David Hammen
  Jun 3 at 4:23
  

  
  
  
  

add a comment | 

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54

$begingroup$

Almost all of the safety critical software that runs on the US side of the Space Station is written in Ada. I wrote "almost all" rather than "all" because there are probably some low level device drivers written in assembly. I can't find out in which language / languages the code that runs on the Russian side was written. I wouldn't be surprised if that also is largely Ada.

Non-safety critical software (e.g., anything running on a laptop) is written in a mix of languages.

share|improve this answer

answered Jun 3 at 4:29

David HammenDavid Hammen

33.7k280147

$endgroup$

• 
  
  
  

  
  19
  

  
  
  
  
  
  

  
  $begingroup$
  Wow, this makes me curious as to What makes Ada the language of choice for the ISS's safety-critical systems?
  $endgroup$
  – uhoh
  Jun 3 at 7:38
  

  
  
  
  


• 
  
  
  

  
  8
  

  
  
  
  
  
  

  
  $begingroup$
  @PearsonArtPhoto - If it's safety critical, yes. The safety critical software runs on the so-called Multiplexer-Demultiplexer (MDM) computers and critical display devices. Non-safety critical software runs on laptops.
  $endgroup$
  – David Hammen
  Jun 3 at 12:13
  

  
  
  
  


• 
  
  
  

  
  9
  

  
  
  
  
  
  

  
  $begingroup$
  What are your sources?
  $endgroup$
  – Bruno Pérel
  Jun 3 at 15:20
  

  
  
  
  


• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  $begingroup$
  @Bruno most likely inside information. (This person appears to work there)
  $endgroup$
  – Shadow Wizard
  Jun 3 at 20:36
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @Nefrin - That is true to some extent, and apparently more so in Europe than in the US. That the US Department of Defense dropped the Ada mandate 20 years ago led to many project managers having new projects be coded in anything but Ada.
  $endgroup$
  – David Hammen
  Jun 5 at 12:20
  

  
  
  
  

 | 
show 11 more comments

54

$begingroup$

Almost all of the safety critical software that runs on the US side of the Space Station is written in Ada. I wrote "almost all" rather than "all" because there are probably some low level device drivers written in assembly. I can't find out in which language / languages the code that runs on the Russian side was written. I wouldn't be surprised if that also is largely Ada.

Non-safety critical software (e.g., anything running on a laptop) is written in a mix of languages.

share|improve this answer

answered Jun 3 at 4:29

David HammenDavid Hammen

33.7k280147

$endgroup$

• 
  
  
  

  
  19
  

  
  
  
  
  
  

  
  $begingroup$
  Wow, this makes me curious as to What makes Ada the language of choice for the ISS's safety-critical systems?
  $endgroup$
  – uhoh
  Jun 3 at 7:38
  

  
  
  
  


• 
  
  
  

  
  8
  

  
  
  
  
  
  

  
  $begingroup$
  @PearsonArtPhoto - If it's safety critical, yes. The safety critical software runs on the so-called Multiplexer-Demultiplexer (MDM) computers and critical display devices. Non-safety critical software runs on laptops.
  $endgroup$
  – David Hammen
  Jun 3 at 12:13
  

  
  
  
  


• 
  
  
  

  
  9
  

  
  
  
  
  
  

  
  $begingroup$
  What are your sources?
  $endgroup$
  – Bruno Pérel
  Jun 3 at 15:20
  

  
  
  
  


• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  $begingroup$
  @Bruno most likely inside information. (This person appears to work there)
  $endgroup$
  – Shadow Wizard
  Jun 3 at 20:36
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @Nefrin - That is true to some extent, and apparently more so in Europe than in the US. That the US Department of Defense dropped the Ada mandate 20 years ago led to many project managers having new projects be coded in anything but Ada.
  $endgroup$
  – David Hammen
  Jun 5 at 12:20
  

  
  
  
  

 | 
show 11 more comments

$begingroup$

Almost all of the safety critical software that runs on the US side of the Space Station is written in Ada. I wrote "almost all" rather than "all" because there are probably some low level device drivers written in assembly. I can't find out in which language / languages the code that runs on the Russian side was written. I wouldn't be surprised if that also is largely Ada.

Non-safety critical software (e.g., anything running on a laptop) is written in a mix of languages.

share|improve this answer

answered Jun 3 at 4:29

David HammenDavid Hammen

33.7k280147

$endgroup$

share|improve this answer

answered Jun 3 at 4:29

David HammenDavid Hammen

33.7k280147

answered Jun 3 at 4:29

David HammenDavid Hammen

33.7k280147

answered Jun 3 at 4:29

David HammenDavid Hammen

33.7k280147

15

$begingroup$

There are a lot of programs involved in running the ISS. The exact details are difficult to discern, a lot of NASA's software is available via this site, with some restrictions, but here is what I can find.

• Astrobee- Runs the "Robotic Operating System"


• Geolocation via a Python Library


• Some elements use LabView

I'm sure there are many other languages, including C, C++, and C#, among others, but it would be very difficult to get a complete list.

share|improve this answer

answered Jun 3 at 2:45

PearsonArtPhoto♦PearsonArtPhoto

86k16250479

$endgroup$

• 
  
  
  

  
  10
  

  
  
  
  
  
  

  
  $begingroup$
  software.nasa.gov is where NASA catalogs it's released software. Much of the software for the ISS is not releasable.
  $endgroup$
  – David Hammen
  Jun 3 at 4:23
  

  
  
  
  

add a comment | 

15

$begingroup$

There are a lot of programs involved in running the ISS. The exact details are difficult to discern, a lot of NASA's software is available via this site, with some restrictions, but here is what I can find.

• Astrobee- Runs the "Robotic Operating System"


• Geolocation via a Python Library


• Some elements use LabView

I'm sure there are many other languages, including C, C++, and C#, among others, but it would be very difficult to get a complete list.

share|improve this answer

answered Jun 3 at 2:45

PearsonArtPhoto♦PearsonArtPhoto

86k16250479

$endgroup$

• 
  
  
  

  
  10
  

  
  
  
  
  
  

  
  $begingroup$
  software.nasa.gov is where NASA catalogs it's released software. Much of the software for the ISS is not releasable.
  $endgroup$
  – David Hammen
  Jun 3 at 4:23
  

  
  
  
  

add a comment | 

$begingroup$

There are a lot of programs involved in running the ISS. The exact details are difficult to discern, a lot of NASA's software is available via this site, with some restrictions, but here is what I can find.

• Astrobee- Runs the "Robotic Operating System"


• Geolocation via a Python Library


• Some elements use LabView

I'm sure there are many other languages, including C, C++, and C#, among others, but it would be very difficult to get a complete list.

share|improve this answer

answered Jun 3 at 2:45

PearsonArtPhoto♦PearsonArtPhoto

86k16250479

$endgroup$

share|improve this answer

answered Jun 3 at 2:45

PearsonArtPhoto♦PearsonArtPhoto

86k16250479

answered Jun 3 at 2:45

PearsonArtPhoto♦PearsonArtPhoto

86k16250479

answered Jun 3 at 2:45

PearsonArtPhoto♦PearsonArtPhoto

86k16250479