Live data from Hacker News

Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

techfixated.com

71–80 of 276 posts

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#71
post #46

Earlier quoted context omitted.

I'd argue that once you have a very well defined requirement doc that mostly kicks humans out of the picture, as well as a patient boss who doesn't want anything ASAP or "Tomorrow morning first thing", engineering is not that hard, and is almost...enjoyment.

Would sending voyager have been a real definite deadline?

Visiting this many planets was only possible due to a very rare alignment. It's a once a century event. That's why we sent two probes, not just one

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#72
post #65

Voyager 1 & 2 is one of my favourite human science achievements, not even so much from technology standpoint, as it's relatively simple compared to what we have now (although that's one of the charms), but just the fact that it's so far away, it still more or less works long after the scheduled mission end time, we can communicate with it and despite all the modern technology progress, it would take decades to catch…

>despite all the modern technology progress, it would take decades to catch up. Could you elaborate on this?

Voyager 1 and 2 are 25 and 21 billion kilometres away, respectively.

Even if we built a rocket just designed to get stuff as far away as quickly away as possible, it would take decades to catch up to where they are now.

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#73
post #6

The thruster fix is the part that gets me. They sent a command that would either revive thrusters dead since 2004 or cause a catastrophic explosion, then waited 46 hours for the round trip with zero ability to intervene. That's a production deployment with no rollback, no monitoring dashboard, and a 23-hour latency on your logs. They nailed it.

I'd argue that once you have a very well defined requirement doc that mostly kicks humans out of the picture, as well as a patient boss who doesn't want anything ASAP or "Tomorrow morning first thing", engineering is not that hard, and is almost...enjoyment.

> ASAP or "Tomorrow morning first thing"

like in "fast pacing environments" with "flat hierarchies" and "agile mindset"? :-D

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#74

Voyager 1 & 2 is one of my favourite human science achievements, not even so much from technology standpoint, as it's relatively simple compared to what we have now (although that's one of the charms), but just the fact that it's so far away, it still more or less works long after the scheduled mission end time, we can communicate with it and despite all the modern technology progress, it would take decades to catch…

A large amount of Voyager 1 & 2 's success isn't just technological it is the ability to take advantage of a specific planetary alignment for a gravity assist [1] that can only occur every 175 years [2] .

[1] https://en.wikipedia.org/wiki/Gravity_assist [2] https://en.wikipedia.org/wiki/Voyager_1#/media/File:Voyager_...

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#75
post #9

I knew about the memory, but an 8-track tape ? That is a surprise. But when you think of it, what else could you use for this in 1977. What amazes me is the tape lasted almost 30 years. I knew tapes back then could last a while, 30 years being bombarded with cosmic rays ? inconceivable :)

A tape with eight tracks, yes. But not the audio cartridge format commonly known as "8-track"; that wouldn't have been suitable to the task. Here's a photo:

https://science.nasa.gov/image-detail/voyager-digital-record...

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#76
post #61
post #15

There is a terrific documentary, 'Its quieter in the twilight', about the aging and dwindling team that still runs both Voyager missions https://www.youtube.com/watch?v=F6L9Du_IFmI

> Video unavailable > The uploader has not made this video available in your country I'd love to watch this but unfortunately. My country being AU.

This YouTube video is just a trailer for the documentary, it does look amazing. It looks like the entire documentary is available on some free streaming sites, here's one: https://play.xumo.com/free-movies/it-s-quieter-in-the-twilig...

If that doesn't work, try using a VPN set to the US as country.

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#77

Voyager 1 & 2 is one of my favourite human science achievements, not even so much from technology standpoint, as it's relatively simple compared to what we have now (although that's one of the charms), but just the fact that it's so far away, it still more or less works long after the scheduled mission end time, we can communicate with it and despite all the modern technology progress, it would take decades to catch…

They are dangerous and reckless. They were also done in the name of humanity, but without humanity’s consent.

I despise the naive scientists who did them as much as those who brought the damocletian sword of nuclear weapons on us.

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#78

Very depressing to see this next to the "LinkedIn uses 2.4GB of RAM" post.

Takes a lot of resources to track your users rather than just cruising through space

Voyager only needs to track itself. Plus, no ads.

Re: Voyager 1 runs on 69 KB of memory and an 8-track tape recorder

#79
post #61
post #15

There is a terrific documentary, 'Its quieter in the twilight', about the aging and dwindling team that still runs both Voyager missions https://www.youtube.com/watch?v=F6L9Du_IFmI

> Video unavailable > The uploader has not made this video available in your country I'd love to watch this but unfortunately. My country being AU.

https://www.itsquieterfilm.com/trailer is the official site.
Post reply on HN