News NASA successfully streamed 8K cat video over 18 million miles with a laser at 267 Mb/s — next transmission will come from 2.2 billion miles away

[Admin]

NASA successfully was able to transmit a UHD video with minimal or no degradation from its spacecraft using lasers, indicating it can receive a high-quality video stream over great distances.

NASA successfully streamed 8K cat video over 18 million miles with a laser at 267 Mb/s — next transmission will come from 2.2 billion miles away : Read more

 

[George³]

Distance for next connection isn't 2.2B mi. Asteroid belt is far close to Earth. Yes, choose trajectory of probe have long way to go before reach Asteroid belt, this is not problem for radio waves and laser beam which will fly the shortest distance.

The distance between the Asteroid Belt and Earth varies considerably depending on where we measure to. Based on its average distance from the Sun, the distance between Earth and the closest edge of the Belt can be said to be between 1.2 to 2.2 AUs, or 179.5 and 329 million km (111.5 and 204.43 million mi).

Text is from "Universe today".

 

[bolweval]

Distance for next connection isn't 2.2B mi. Asteroid belt is far close to Earth. Yes, choose trajectory of probe have long way to go before reach Asteroid belt, this is not problem for radio waves and laser beam which will fly the shortest distance.

Text is from "Universe today".

Maybe you should call NASA and let them know before it's to late!

 

[George³]

Maybe you should call NASA and let them know before it's to late!

I doubt that the agency as a whole has a problem with facts. Perhaps some sensation was sought in the framing of this article, and that is why the largest number that the one who compiled it was able to arrive at is mentioned.

 

[PaulAlcorn]

From NASA's description of the Psyche mission:

"Highlights from the Oct. 13, 2023, launch of NASA’s Psyche spacecraft, which will travel 2.2 billion miles to a metal-rich asteroid in the main asteroid belt between Mars and Jupiter. Psyche lifted off from NASA’s Kennedy Space Center in Florida at 7:19 a.m PDT (10:19 a.m. EDT)."

Source:

View: https://www.youtube.com/watch?v=AwCiHscmEQE&ab_channel=NASAJetPropulsionLaboratory

 

[George³]

From NASA's description of the Psyche mission:

"Highlights from the Oct. 13, 2023, launch of NASA’s Psyche spacecraft, which will travel 2.2 billion miles to a metal-rich asteroid in the main asteroid belt between Mars and Jupiter. Psyche lifted off from NASA’s Kennedy Space Center in Florida at 7:19 a.m PDT (10:19 a.m. EDT)."

Source:

View: https://www.youtube.com/watch?v=AwCiHscmEQE&ab_channel=NASAJetPropulsionLaboratory

Yes this is how long will travel probe because isn't possible to reach Asteroid belt following shortest line between Earth and belt. Laser beam didn't limited by gravity. Optical line between probe and Earth to date of next connection will be a few hundred million miles.

 

[Eximo]

In shorter words. The difference between flight path distance and average orbital distance. It is important to note because it would be much more impressive to get that bandwidth at that distance.

 

[Ralston18]

Why not some series of interim transmissions along the way as paths and line of sight permit?

Even if not equal increments I would think there is some value in knowing if all stops at some distance or another. E.g., 1 billion miles (arbitrary pick).

Or is 2.2 billion miles actually the next and only available window?

Just curious.

 

[USAFRet]

Why not some series of interim transmissions along the way as paths and line of sight permit?

Even if not equal increments I would think there is some value in knowing if all stops at some distance or another. E.g., 1 billion miles (arbitrary pick).

Or is 2.2 billion miles actually the next and only available window?

Just curious.

2.2B miles is the flight path.

Line of sight transmission is much shorter.

 

[George³]

2.2B miles is the flight path.

Line of sight transmission is much shorter.

Yes target for optical distance for next deep space laser communication demonstration is around 300 million kilometers or 186.4 million miles.

 

[Amdlova]

That proof the universe is flat and the earth its round. (Flat earth people will nuts)

 

[Ralston18]

Yes target for optical distance for next deep space laser communication demonstration is around 300 million kilometers or 186.4 million miles.

So NASA could and will be sending interim transmissions along the way per the line of sight path - correct?

 

[USAFRet]

So NASA could and will be sending interim transmissions along the way per the line of sight path - correct?

No, not interims. That would require some device in the middle.

For instance, your drive to work may be 20 miles by car odometer, but only 8 miles, 'as the crow flies'.

The transmission they are doing is the crow.

 

[Ralston18]

Okay strike interim.

Transmission at "crow" equal 300 million, 600 million, etc..

Or some other applicable "crow" distances even if not equally spaced.

Just enought to know that the transmission process is working along the way.

Thanks.

 

[USAFRet]

Okay strike interim.

Transmission at "crow" equal 300 million, 600 million, etc..

Or some other applicable "crow" distances even if not equally spaced.

Just enought to know that the transmission process is working along the way.

Thanks.

Right.
As that vehicle continues to move away, they will try again at some farther line of sight distance.

 

[Ralston18]

👍

 

[George³]

Laser communication with the Psyche probe is for demonstration/experimental purposes only. There are currently no publicly known records of a subsequent attempt by this probe beyond the one described at a distance of 186.4 million miles. But it is likely that there will be other similar experiments in the future with other spacecraft before the routine use of this mode of communication begins.

 

[bit_user]

I'm just wondering how well they need to aim it. That seems to me like the hard part.

Also, any error correction would need to be forward-error correction. If you used a scheme like TCP, your retransmit delay would be astronomical!
🤣

 

[lxtbell2]

Regardless, a 101-second delay over 19 million miles is nothing but extraordinarily groundbreaking

That's the speed of light and latency with radio should be just the same.

The groundbreaking thing here is the bandwidth of 267Mbps at that distance, not the latency.