this post was submitted on 31 Oct 2024
425 points (99.8% liked)

Space

8781 readers
79 users here now

Share & discuss informative content on: Astrophysics, Cosmology, Space Exploration, Planetary Science and Astrobiology.


Rules

  1. Be respectful and inclusive.
  2. No harassment, hate speech, or trolling.
  3. Engage in constructive discussions.
  4. Share relevant content.
  5. Follow guidelines and moderators' instructions.
  6. Use appropriate language and tone.
  7. Report violations.
  8. Foster a continuous learning environment.

Picture of the Day

The Busy Center of the Lagoon Nebula


Related Communities

πŸ”­ Science

πŸš€ Engineering

🌌 Art and Photography


Other Cool Links

founded 1 year ago
MODERATORS
top 50 comments
sorted by: hot top controversial new old
[–] [email protected] 150 points 3 weeks ago (2 children)

Always have a backup. You may not use it for 43 years, but you’ll be glad it’s there when you do.

[–] [email protected] 159 points 3 weeks ago (4 children)

I'm only 41 years old.

This recievier has been working for my whole life, goes out of service 15 billion miles away, turns on a backup reciever, and is now back in contact with NASA.

.........but the ice cream machine at McDonalds is still broken.

[–] [email protected] 84 points 3 weeks ago

Both are by design. The ice cream machine actually just got a DMCA exception so the company that makes it no longer can dictate who repairs it.

[–] [email protected] 28 points 3 weeks ago (2 children)

I'm picturing the Voyager 1 terminal is an ancient computer from the 1970s hooked up to a large parabolic antenna, and everyone is afraid to upgrade it because they might mess something up. I'm sure that's not the case, but its what lives in my mind.

Since I was thinking about it I looked up some stuff: "So Voyager-1 does not β€œreally” have a computer, in the sense that it does not have an operating system or RAM or a microprocessor. It was built in the 60s before any of this was invented and used CMOS-based microcontroller chips from Texas Instruments. Overall, it has a 16-bit processor and a MASSIVE memory of 70 KILOBYTES. That is smaller memory than a thumbnail of a phone image today, but it was enough to send images through which we discovered Jupiter has rings and much more."

From: https://medium.com/towards-generative-ai/voyager-1-what-computer-system-it-has-that-is-still-running-strong-a269aaea316b

[–] [email protected] 7 points 3 weeks ago

Although it doesn't compare to modern systems, the computer systems on Voyager is a computer by all means. It's even the longest running computer that ever existed, having never been shut off. It runs Fortran code.

The image data that the camera made didnn't have to fit in the computers memory. It was written directly to tape, which was then transmitted by the computer. The resolution is 800x800 pixels with only one colour at a time. The colour images or in larger resolutions were combinations of several images. The camera has been shut off by now.

Speaking of not wanting to touch the code, it did have an issue last year, where the code seemed to have stopped or gone into a loop for unknown reasons making it inaccessible for the operators on Earth. Thankfully another part of the computer was instructed to periodically overwrite the main code, so it managed to correct the error by itself. At least that's what I remember reading.

[–] [email protected] 3 points 3 weeks ago

You can cram a load of machine language into 70K. Seems far more than needed, bet a bunch is for redundancy.

[–] [email protected] 13 points 3 weeks ago

The obvious solution is to launch the ice cream machines into space.

[–] [email protected] 6 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Holy fuck is that* the real distance?

[–] [email protected] 49 points 3 weeks ago (2 children)
[–] [email protected] 14 points 3 weeks ago (1 children)

Hank, don't spray WD into your locks, you're better than that Hank

[–] [email protected] 12 points 3 weeks ago (1 children)
  1. The guy is in Texas and not cooking over pecan wood. I'm making this point to show that he's ignorant. That doesn't mean dumb, it just means he doesn't know any better.

  2. We all know you shouldn't use that on your locks these days and can easily Google why. He wasn't a technology guy and only really knew what he read or what an old guy who didn't know shit told him. He did things the way he thought was right but he had some pretty big blind spots. Maybe he didn't know about 3-in-1 oil.

  3. Plus it was a cartoon written by people who probably didn't know any better and I'm taking both that fact and your comment far too seriously (or I'm just making an elaborate joke, that's for the reader to decide).

[–] [email protected] 13 points 3 weeks ago (1 children)

In case you're wondering, the correct substance is graphite powder

load more comments (1 replies)
[–] [email protected] 4 points 3 weeks ago
[–] [email protected] 76 points 3 weeks ago (2 children)

Every few months there is a similar such story about this ancient marvel of technology and the people remotely maintaining it against all odds.

I can imagine a headline 100 years from now:

"Engineers are modifying Voyager 1 decorative panel bolt into a functional interstellar communicator"

[–] [email protected] 27 points 3 weeks ago (1 children)

each line of code is transmitted over a bandwidth that only supports 1/2 a bit, and it takes 3.5 years to reach the Voyager

[–] [email protected] 5 points 3 weeks ago

This is the exact bit of data I was searching for, thanks a bunch.

[–] [email protected] 11 points 3 weeks ago (1 children)

A hacker has hijacked the communication relay and managed to install Doom on the Voyager. The game runs perfectly but the user interface is reported to be somewhat laggy.

load more comments (1 replies)
[–] [email protected] 51 points 3 weeks ago (1 children)

Cell phone broke, now using pay phone.

[–] [email protected] 68 points 3 weeks ago (2 children)

This is a collect call from: MOMCOMEPICKMEUP IMOUTSIDETHEHELIOPAUSE, do you accept the charges?

[–] [email protected] 11 points 3 weeks ago

We need to start a new prank. People should randomly start phone conversations with, "This is a collect call from Richard, do you accept the charges?"., when you phone a friend. It's funny because no one does collect calls on cell phones. It's ironic & stupid at the same time.

[–] [email protected] 4 points 3 weeks ago

You have a collect call from: daddy fine Nebraska cornfields Chris garbage hang up

[–] [email protected] 47 points 3 weeks ago (2 children)

It's sad it'll probably lose contact relatively soon. Does anyone know if there are any plans for a new long distance probe?

[–] [email protected] 55 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

They're already out there. Just don't get as much news as Voyager. Unfortunately I don't think any will be capable of lasting as long since we stopped using the radio isotope generators. New horizons is currently in the Kupier belt. It's the 5th such probe to reach escape velocity from our solar system. Pioneer 10 and 11 were the other non-voyager probes.

Edit: I was incorrect, new horizons does use an RTG for power. But right now its mission is slated to end in 2029. I wonder if it will be kept alive like the Voyager probes.

Edit 2: yeah, the RTG is slated to run out of power to run the transmitters in the 2030s. It was originally designed to be more powerful but the DOE delayed delivery of the plutonium 238 required.

[–] [email protected] 7 points 3 weeks ago (4 children)

Dept of Education? D O Emissions? Can't figure it out even with some searching

[–] [email protected] 22 points 3 weeks ago (1 children)

Department of Energy. The main role is to handle the radioactive materials that the government creates and uses

[–] [email protected] 6 points 3 weeks ago (1 children)

Also one of the three departments Rick Perry (R-Texas) couldn't remember that he wanted to eliminate.

[–] [email protected] 4 points 3 weeks ago (1 children)

"See? If there is no government agency handlin' radioactive waste, that problem goes away!"

[–] [email protected] 5 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

He did change his tune after he became Secretary of Energy.

Also, May 15, 2023 β€” Former Energy Secretary Rick Perry would not support former President Donald Trump in his reelection campaign when asked on Sunday,

load more comments (1 replies)
[–] [email protected] 15 points 3 weeks ago

Department of Energy.

[–] [email protected] 6 points 3 weeks ago (1 children)
[–] [email protected] 6 points 3 weeks ago

Department of Enthalpy

[–] [email protected] 5 points 3 weeks ago

Department of Energy

[–] [email protected] 3 points 3 weeks ago (1 children)

Cool. Thank you for the info. I'll have to look them up.

[–] [email protected] 4 points 3 weeks ago

Sorry I put a couple updates in there as well.

[–] [email protected] 19 points 3 weeks ago (2 children)

I think for the Voyager launches the planets and the sun were aligned in such a way that the probes could be slingshotted around them to gain speed. I think such an alignment is quite rare?

[–] [email protected] 16 points 3 weeks ago

It's a bit more complicated than that. New Horizons actually went way faster than the Voyager probes, getting to Pluto in only 9.5 years. It took Voyager 2 just slightly longer than 12 years to reach Neptune for comparison. The planetary alignment you are thinking about was due to relative proximity. Obviously you can't use Saturn to slingshot you to Uranus if they are on opposite sides of the solar system. All the outer planets were going to be on the same side of the solar system, allowing the Voyager probes to visit them all in succession.

load more comments (1 replies)
[–] [email protected] 24 points 3 weeks ago* (last edited 3 weeks ago)

Humans will be extinct, and Voyager will still be carrying our mixtape through eternity.

[–] [email protected] 23 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Talk about a slow troubleshooting process. Thats, what, 80,000,000ms latency?

[–] [email protected] 4 points 3 weeks ago (1 children)

And any useful answer thread on stackoverflow is archived.

[–] [email protected] 6 points 3 weeks ago

Your post "Received error code 0459 from 1981 JPL Transmitter Array" has been marked as a Duplicate.

[–] 0x0 20 points 3 weeks ago (3 children)

Whenever someone tells me 1 GiB of RAM isn't enough, i think of Voyager.

[–] [email protected] 16 points 3 weeks ago (1 children)

Let's see Voyager load up Chrome real quick

[–] [email protected] 13 points 3 weeks ago* (last edited 3 weeks ago)

Voyager is it's own search engine. Why would it need chrome?

[–] [email protected] 4 points 3 weeks ago

Voyager wasn’t written in JavaScript, to Web 2.0

load more comments (1 replies)
[–] [email protected] 16 points 3 weeks ago (1 children)
[–] [email protected] 8 points 3 weeks ago (1 children)
[–] [email protected] 6 points 3 weeks ago

Some would say, too legit, even.

[–] [email protected] 13 points 3 weeks ago

I get it. Sometimes my voice gets hoarse too.

load more comments
view more: next β€Ί