The Voyagers

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Profile Gordon Lowe
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Message 1888237 - Posted: 7 Sep 2017, 0:42:56 UTC

Thanks to Carl Sagan for persuading the Voyager team to turn the camera back toward Earth for the famous pale blue dot picture. :~)
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Message 1888239 - Posted: 7 Sep 2017, 0:50:30 UTC - in response to Message 1888084.  

NASA revealed the winning #MessageToVoyager and beamed it into space.
https://youtu.be/5VzVyYbPbJY

I love that William Shatner was alive to take part in this!
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Message 1890677 - Posted: 18 Sep 2017, 23:54:19 UTC

Nice article about the Golden Records aboard the Voyagers:

https://www.newyorker.com/tech/elements/voyager-golden-record-40th-anniversary-timothy-ferris
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Message 1890744 - Posted: 19 Sep 2017, 5:48:08 UTC

Good find Gordon.
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Message 1904479 - Posted: 2 Dec 2017, 20:23:53 UTC

Thrusters fired!
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Message 1904752 - Posted: 4 Dec 2017, 7:34:28 UTC

Totally incredible!!!
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Message 1904757 - Posted: 4 Dec 2017, 8:56:25 UTC

I loved the Viking mission to Mars, and it communicated back to earth for a long time, all things considering it was a planetary lander, but the Voyager mission is so beyond anything the earth ever has sent out into space, I really love hearing about it still being alive out there. The fact that it can still receive and process physically functional commands is truly amazing to me. I wish I was on the staff of it's control center so I could celebrate with them. :~)
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Message 1904775 - Posted: 4 Dec 2017, 14:26:12 UTC

+1
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Message 1904789 - Posted: 4 Dec 2017, 15:51:49 UTC
Last modified: 4 Dec 2017, 15:52:46 UTC

The computers of the Voyagers have programs written in an outdated assembler language, according to NASA, and maybe NASA had problems finding programmers who knew that assembler. Having worked with theZilog Z80 assembler, maybe I can start a new career. We used eight inch floppies,, 20 MByte Winchester disks and 10 Mbyte tapes, on which we made daily incremental backups.
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Message 1904835 - Posted: 4 Dec 2017, 19:34:09 UTC

Ye gods, I remember 8" floppies ans Winchester drives from 1980!!!
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Message 1904842 - Posted: 4 Dec 2017, 20:17:40 UTC - in response to Message 1904789.  

The computers of the Voyagers have programs written in an outdated assembler language, according to NASA, and maybe NASA had problems finding programmers who knew that assembler. Having worked with theZilog Z80 assembler, maybe I can start a new career. We used eight inch floppies,, 20 MByte Winchester disks and 10 Mbyte tapes, on which we made daily incremental backups.
Tullio

Perhaps the computers of the Voyagers are not even coded with assembler language.
The Apollo moonlanders where not.
Just hard coded machine language.
https://history.nasa.gov/computers/Ch6-2.html
The computers aboard the Voyager probes each have 69.63 kilobytes of memory, total. That’s about enough to store one average internet jpeg file. The probes’ scientific data is encoded on old-fashioned digital 8-track tape machines rather than whatever solid state drive your high-end laptop is currently using. Once it's been transmitted to Earth, the spacecraft have to write over old data in order to have enough room for new observations.
The Voyager machines are capable of executing about 81,000 instructions per second. The smart phone that is likely sitting in your pocket is probably about 7,500 times faster than that. They transmit their data back to Earth at 160 bits per second. A slow dial-up connection can deliver at least 20,000 bits per second.
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Message boards : Science (non-SETI) : The Voyagers


 
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