ScienceCasts: A Laser Message from Space: "Hello World"
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- Опубліковано 2 жов 2024
- Visit science.nasa.gov/ for more.
In early June, a laser beam lanced out of the night sky over California, heralding a breakthrough in space communications. The message it carried was "Hello, World."
What a great achievement. This means that when we arrive on Mars, there will be new technology to beam messages faster than we ever imagined. Way to go scientists! All of you really are hero's to humanity.
It's good to see that the laser initiative finally starts getting thread. Now we need a geosynchronous satellite with a comm payload for receive from ground and space and send to ground and space objectives.
A hub.
What needs to be set up is a chain of geosynchronous satellites surrounding the Earth in line of sight of eachother and connected by laser communication. They would be virtually stationary relative to eachother, so maintaining a link would be fairly easy. Then a receiver/transmitter station under each satellite, again virtually stationary relative to the satellite in orbit. This way if there were interference like storm clouds, the other connections would still be able to maintain a constant communication flow. Basically a redundancy. All but one of the communication stations could be offline for whatever reason and there would still be a connection. The ISS or any spacecraft could aim their laser com to the nearest satellite instead of trying to hit a spot on the ground.
***** Considering how fast the ISS is traveling 2 perhaps 3 are more than enough. Given the budget of Nasa, which is basically peanuts, 1 is more than enough to serve the current needs.
Evolving is necessary expenditures that overkill the golden egg chicken are unnecessary. Don't worry tho, it will come, like all SciFi fiction this is becoming fact, it's shameful that it took so long considering we were using the basics of laser comms ever since the Moon landings but hey, they are finally moving. When i heard some time ago that laser will finally serve as the dsl upgrade equivalent to the current pathetic system i was practically dancing in my chair.
It would be great to develop this as a targeting system for satellite borne laser weapons
nicerperson Or not. Mainly because it's pointless and unrelated.
Should've sent: "Good morning star-shine, the earth says hello!" from the chocolate factory.
That's for when they will send a message from ground up! :)
Ahaa of course!
Why did I not think of that, mustn't write in such a hurry next time.
I thought your reply was cute, aside from the other garbage spewed. The military is the reason we even have an internet, DARPA and USENET were the precursors of the net. I used it first back in 1977 at Bell Labs. Most if not all of the technology was paid for by research done on behalf of the military. The military. MSWord is based on a UnixCC+ platform. Unix is AT&T's invented language making Microsoft possible. Again, loved your reply!
Well done!
"Hello Space!"
main()
{
printf("Hello, World
");
}
so nice to see and freaky because it just so happens i'm taking break from programing after 1hour of debugging code(fyi is still haven't found the cause of my error).
Light is shorter radio wave
ApocalypticCheese All types of electromagnetic radiation are types of light. That is why it is called IR light, vicible light and UV light.
…and x-rays is shorter light, yep.
Андрей Мурзин its the second longest wavelength after radio
I really love the content of the videos uploaded to the NASA channel, but surely NASA has it in the budget to hire a narrator who sounds just a LITTLE more interested in the words she's saying. The videos on here would be ten times more interesting if the narrators voice weren't so utterly boring.
YAY now astronauts can have HBO to watch game of thrones!! lol
But since radio waves travels at the same speed and isnt even blocked by clouds, whats its limitation compared to optic eletromag. wave? Is laser generation technology faster?
it's happening!!!
Laser data transmission has been around for decades now but the same basic problem exists....does not work when it's cloudy.
Solution: create a constellation of satellites in geosynchronous orbit relayed to each other. There can't be clouds everywhere on earth at once.
AideTechBot
It's been done before, by Iridium and maybe others, but Elon Musk has just created a company in Seattle, Washington, USA; to make a really large group of mini-satellites for a new communications network he has in mind. It's coming, be patient... :)
Losing signal due to clouds happens to the ground stations, not the satellites.
AMAZING!!! Thanks NASA.
I got a question. Now that the laser message is a fact, Is NASA sending spacecrafts (MAVEN specially) with this equipment??
I assumed NASA was already sending there information on beams of light, I was unaware that they were behind the compact disk player.
Next goal "Superluminar messages"!
And... GO!
We communicated with lasers across a Beeston (Leeds UK) car park over 25 years ago for our Novell Network, so excuse me if I am not that impressed.
Of course 25 years ago that was impressive. However take into account this not 100m but 330Km+, and further (and this is the hard part) not 'static' but *actively* *tracking* at 27KPH. That's impressive.
Jim Barchuk I'll be impressed when they develop transporters, lasers? phooey! so 60's man
nicerperson Sorry nice person, but ole boy. . . . .but you seem to have just enough intelligence about science to be stupid in your gross understanding and acceptance of progress. When you compare the Novell network achievement with the Laser Message from space accomplishment, you are literally comparing the strength of a tit-mouse with that of an elephant. The devil is in the details. Anybody can hit a telephone booth if they're inside it, but try hitting that same phone booth while flying overhead at 17,000 mph. Oh, so sorry. . .we exceptionalist here is the US still use our standard unit of measure. I'll convert and downgrade it for you blokes in the UK. 17,000m/h = 27,358.848km/h
- on the same planetary mass ?
***** I don't go to mass - I am Jewish
I wonder if something or...SOMEONE sees it. 0_O
I wonder how much energy it took to generate that laser beam. I suggest the answer is far more than what is needed for a radio wave. It would be good though if the next deep space mission had a laser instead of a radio to communicate.
The vid said the laser is 2.5W, for each of the 'ground tracker' and the ISS signal. I don't know what the RF 'cost' is.
Congrats, guyz! This is fast delivered new era!
I remember this being one of the things Michio Kaku talked about in his documentaries.
As soon as we can have high speed internet access in space, I'm going to be ok with living in space.
Now then, Isn't that better! NTITB! --->Zoom
Lucky it wasn't cloudy...
wow.. you have technology!!?!!
Great !
I imagine in 5 years...
a step ahead..
Hello World!
Hello Alan!
World Hahahahahhhahaha I love you.
Cool
!!!Felicitaciones!!!! es Maravilloso
Oh dear, They used LabView.
Nicerperson doesn't seem to be a nicer person. Also, the laser has been around here in the USA longer than in the UK. An American invented the laser. We've done everything and more than the UK has with lasers. Also, the car example is NOTHING compared to what we're doing in space. As for what you said being a joke - sure buddy, that's what all the people who make stupid UA-cam remarks say when they realize how stupid it was. Every time... Just in case you are interested in who made the first laser; Theodore Maiman made the first laser operate on 16 May 1960 at the Hughes Research Laboratory in California. Another man named Gordon Gould, from NewYork actually wrote a paper on the subject and used the term 'laser' first. Gordon was eventually credited with the invention of the optical laser, along with Theodore Maiman and two other men. He was not the first to make it work though. The USA scientists then proceeded to do all kinds of experiments with lasers. THIS DID NOT HAPPEN IN THE UK. Don't get me wrong; I have nothing against the UK, but you seem to have it in for the USA, so I thought I'd edify things for you. Clear enough?