this post was submitted on 19 Dec 2023
672 points (97.9% liked)

Technology

61263 readers
3988 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots


founded 2 years ago
MODERATORS
top 50 comments
sorted by: hot top controversial new old
[–] [email protected] 94 points 1 year ago (2 children)

What’s Taters, precious?

[–] [email protected] 40 points 1 year ago

Spoil em, flash em, laser out a few.

load more comments (1 replies)
[–] [email protected] 70 points 1 year ago* (last edited 1 year ago) (2 children)

Using a laser they could just as well send the cat. He would follow the laser just as well.

[–] [email protected] 23 points 1 year ago (1 children)

Guess what the cat is doing in the video

[–] [email protected] 7 points 1 year ago
[–] [email protected] 4 points 1 year ago

Faster than light travel achieved

[–] [email protected] 66 points 1 year ago (2 children)

Video beamed. Video intercepted by aliens. Think cats rule earth.

They're right.

[–] [email protected] 5 points 1 year ago (1 children)

They'd have to be really close. This doesn't even get close to Mars or Venus.

[–] [email protected] 5 points 1 year ago

They are.

whistles x-files theme

load more comments (1 replies)
[–] [email protected] 47 points 1 year ago (4 children)

Bit annoying that they're more specific about latency than bandwidth. The laser had lower latency than broadband, but I want to know if the laser had enough bandwidth to stream the video.

[–] [email protected] 38 points 1 year ago (1 children)

This latest milestone comes after “first light” was achieved on Nov. 14. Since then, the system has demonstrated faster data downlink speeds and increased pointing accuracy during its weekly checkouts. On the night of Dec. 4, the project demonstrated downlink bit rates of 62.5 Mbps, 100 Mbps, and 267 Mbps, which is comparable to broadband internet download speeds. The team was able to download a total of 1.3 terabits of data during that time. As a comparison, NASA’s Magellan mission to Venus downlinked 1.2 terabits during its entire mission from 1990 to 1994.

https://www.nasa.gov/directorates/stmd/tech-demo-missions-program/deep-space-optical-communications-dsoc/nasas-tech-demo-streams-first-video-from-deep-space-via-laser/

[–] [email protected] 7 points 1 year ago (2 children)

Honestly the 1.2 TB I'm the early 90s is an insanely impressive figure to me. I mean in that era a gigabyte seemed like an obscene amount of data, the interat ran at less than 56 kbps, and I don't think I had a 1GB drive in my hime PC until almost the turn of the millennium. Sending and storing that much from venus is a huge accomplishment.

[–] [email protected] 12 points 1 year ago* (last edited 1 year ago)

1.2 Tb* ~ 150GB

Still impressive though

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago)

They probably stored it on tape which was slow but could hold an impressive amount of data.

I remember my first multi gig hard drive. I was blown away that I could fully install Diablo 2, Fallout 2, and a cracked version of 3d Studio Max at the same time. No more changing disks!

[–] [email protected] 21 points 1 year ago* (last edited 1 year ago) (1 children)

Lower latency than broadband...?

If you're getting >100s ping times you might want to have them come out to check your lines.

[–] [email protected] 26 points 1 year ago (2 children)

Something tells me you're not getting sub 100ms latency with broadband over 19 million miles

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

They're new high tech lasers that go faster than the speed of light!

[–] [email protected] 9 points 1 year ago (1 children)

Actually, most latency issues at that scale are due to the relays themselves. Earth diameter is only 42 light-ms

load more comments (1 replies)
load more comments (1 replies)
[–] [email protected] 19 points 1 year ago

"The video was then downloaded and each frame was sent to NASA's Jet Propulsion Laboratory in Southern California, where it was played in real time. "

It sounds like it. Laser comm can have some insanely high data rates due to the high frequency of the radiation.

[–] [email protected] 7 points 1 year ago (1 children)

if you want more bandwidth you can just use more lasers

[–] [email protected] 7 points 1 year ago

More lasers!!!!

[–] [email protected] 36 points 1 year ago (4 children)

What strikes me is not the bandwidth achieved but the precision of the technology to aim the laser. 19 million miles is a great distance to successfully aim a beam of light. As this technology develops, real time communications with objects in orbit like around Mars will be possible.

[–] [email protected] 41 points 1 year ago (5 children)

Well realtime is just not true. But cool technology nonetheless.

load more comments (5 replies)
[–] [email protected] 11 points 1 year ago (4 children)

I'm wondering if we will need to tweak our Internet protocols to include interplanetary time? I would imagine mirroring would be much more important. Because light can only go so fast.

[–] [email protected] 13 points 1 year ago

Yes, the high latency and intermittent connectivity is a big challenge. Delay tolerant networking (DTN) is one good way of solving this problem.

[–] [email protected] 3 points 1 year ago (2 children)

I think the issue, again will be date and time.

DDMMYYYY + Planet + Orbit?

[–] [email protected] 9 points 1 year ago

software developers are seething

[–] [email protected] 5 points 1 year ago

UTC and forget

load more comments (1 replies)
[–] [email protected] 9 points 1 year ago

The beam is reeeealy wide by the time it gets there. Still a great achivement, though.

[–] [email protected] 7 points 1 year ago

I presume that we're not yet concerned with what the Ansible tech awoke in the vast emptiness between, hmm?

[–] [email protected] 32 points 1 year ago

Despite transmitting from millions of miles away, it was able to send the video faster than most broadband internet connections

That guy must be a Spectrum subscriber

[–] [email protected] 25 points 1 year ago (1 children)

"We're receiving coherent signals from the edge of the Milky Way."

"Life can exist in such isolation? What are they saying, do they need rescue?"

"It's a video of a small fuzzy animal."

"What?"

"When we probed deeper to get more context, we found millions of such videos, supposedly they're cherished non-intelligient companions and the people there wished to express that."

"...

...

What?"

load more comments (1 replies)
[–] [email protected] 23 points 1 year ago (3 children)

The article isn't terribly long, but here is the direct link to Taters https://www.youtube.com/watch?v=GvJtVOmFs5Q

[–] [email protected] 8 points 1 year ago

Here is an alternative Piped link(s):

https://www.piped.video/watch?v=GvJtVOmFs5Q

Piped is a privacy-respecting open-source alternative frontend to YouTube.

I'm open-source; check me out at GitHub.

[–] [email protected] 6 points 1 year ago

Thank you, I came here for the cat tax.

load more comments (1 replies)
[–] circuscritic 19 points 1 year ago (1 children)

The MCRN & UNN would be proud.

[–] [email protected] 9 points 1 year ago (6 children)

Can't wait til we can start watching interplanetary wars play out in real time.

[–] circuscritic 8 points 1 year ago* (last edited 1 year ago)

Pretty sure it won't be in real time with all the light delay.

load more comments (5 replies)
[–] whoisearth 12 points 1 year ago* (last edited 1 year ago)

Somewhere on my work wiki is a picture of puppies that I sent over SWIFT to a bank to test that the relationship was setup properly.

Cats and dogs are always acceptable test messages

[–] [email protected] 9 points 1 year ago
  1. This is the correct use of technology. (But later let's test the ping on Doom over laserlan)

  2. Taters is very precious!!

[–] [email protected] 9 points 1 year ago

This tracks

[–] [email protected] 7 points 1 year ago

"What's Taters?"

"Po-ta-toes... Boil um mash um stick um in a stew!"

[–] [email protected] 6 points 1 year ago

Taters, star surfer

load more comments
view more: next ›