and I mean deep! The latest idea to send a fleet of probes to Alpha Centauri. The coms will be interesting - 4 years to get a signal back! Interesting problem and humans haven't developed quantum coms yet.
Deep Space
Started by ●April 12, 2016
Reply by ●April 13, 20162016-04-13
On 12.04.2016 22:09, gyansorova@gmail.com wrote:> and I mean deep! The latest idea to send a fleet of probes to Alpha Centauri. The coms will be interesting - 4 years to get a signal back! Interesting problem and humans haven't developed quantum coms yet. > > >I'm not sure which particular idea is the "latest". The latest idea of an interstellar probe I heard about was Project Daedalus, a study which was completed long ago: http://en.wikipedia.org/wiki/Project_Daedalus Evgeny
Reply by ●April 13, 20162016-04-13
On 04/13/2016 03:43 PM, Evgeny Filatov wrote:> On 12.04.2016 22:09, gyansorova@gmail.com wrote: >> and I mean deep! The latest idea to send a fleet of probes to Alpha >> Centauri. The coms will be interesting - 4 years to get a signal back! >> Interesting problem and humans haven't developed quantum coms yet. >> >> >> > > I'm not sure which particular idea is the "latest". The latest idea of > an interstellar probe I heard about was Project Daedalus, a study which > was completed long ago: > > http://en.wikipedia.org/wiki/Project_Daedalus > > Evgeny >This might be a reference to Stephen Hawking's recent ideas. Steve
Reply by ●April 13, 20162016-04-13
On 13.04.2016 10:45, Steve Underwood wrote:> On 04/13/2016 03:43 PM, Evgeny Filatov wrote: >> On 12.04.2016 22:09, gyansorova@gmail.com wrote: >>> and I mean deep! The latest idea to send a fleet of probes to Alpha >>> Centauri. The coms will be interesting - 4 years to get a signal back! >>> Interesting problem and humans haven't developed quantum coms yet. >>> >>> >>> >> >> I'm not sure which particular idea is the "latest". The latest idea of >> an interstellar probe I heard about was Project Daedalus, a study which >> was completed long ago: >> >> http://en.wikipedia.org/wiki/Project_Daedalus >> >> Evgeny >> > This might be a reference to Stephen Hawking's recent ideas. > > Steve >Thanks! It's an interesting idea. Why not. Evgeny
Reply by ●April 13, 20162016-04-13
On 13.04.2016 10:56, Evgeny Filatov wrote:> On 13.04.2016 10:45, Steve Underwood wrote: >> On 04/13/2016 03:43 PM, Evgeny Filatov wrote: >>> On 12.04.2016 22:09, gyansorova@gmail.com wrote: >>>> and I mean deep! The latest idea to send a fleet of probes to Alpha >>>> Centauri. The coms will be interesting - 4 years to get a signal back! >>>> Interesting problem and humans haven't developed quantum coms yet. >>>> >>>> >>>> >>> >>> I'm not sure which particular idea is the "latest". The latest idea of >>> an interstellar probe I heard about was Project Daedalus, a study which >>> was completed long ago: >>> >>> http://en.wikipedia.org/wiki/Project_Daedalus >>> >>> Evgeny >>> >> This might be a reference to Stephen Hawking's recent ideas. >> >> Steve >> > > Thanks! It's an interesting idea. Why not. > > Evgeny >Just I wouldn't be extremely optimistic about what such a mission could potentially accomplish. Getting a photo of a star from somewhere inside the star system? Perhaps. A detailed photo of an exoplanet? Hardly a chance. Evgeny
Reply by ●April 13, 20162016-04-13
On Tue, 12 Apr 2016 12:09:41 -0700 (PDT), gyansorova@gmail.com wrote:>and I mean deep! The latest idea to send a fleet of probes to Alpha Centauri. The coms will be interesting - 4 years to get a signal back! Interesting problem and humans haven't developed quantum coms yet.OK, I'll bite: What advantages might we expect from quantum coms? As far as I can tell, there is still no hope of actual faster-than-light communication there. Did you have something else in mind, or have I missed something? Best regards, Bob Masta DAQARTA v9.20 Data AcQuisition And Real-Time Analysis www.daqarta.com Scope, Spectrum, Spectrogram, Sound Level Meter Frequency Counter, Pitch Track, Pitch-to-MIDI FREE 8-channel Signal Generator, DaqMusiq generator Science with your sound card!
Reply by ●April 13, 20162016-04-13
On Tue, 12 Apr 2016 12:09:41 -0700, gyansorova wrote:> and I mean deep! The latest idea to send a fleet of probes to Alpha > Centauri. The coms will be interesting - 4 years to get a signal back! > Interesting problem and humans haven't developed quantum coms yet.Link? "The latest" is kinda vague. -- www.wescottdesign.com
Reply by ●April 13, 20162016-04-13
>and I mean deep! The latest idea to send a fleet of probes to Alpha >Centauri. The coms will be interesting - 4 years to get a signal back! >Interesting problem and humans haven't developed quantum coms yet.I don't like to discourage dreamers, but where does this idea come from? Why send a fleet? The short answer is there will be plenty of time to figure out the communication problem on the receiving end. Even if the probes could achieve an average speed of 1/10 the speed of light (67.1 million mph), it would still take forty years for them to get there. At 1/100 the speed of light, it will take 400 years to get there. So assuming you could somehow employ "spooky action at a distance" for instantaneous communication, it would still be quite a while before the message gets received. For what purpose? What information is determinable locally that can't be obtained at a distance? As a hypothetical idea, it may be a good platform to sharpen some thinking. As a practical matter, next to zilch. Let's colonize the asteroids first! Forget Mars. YMMV. Ced --------------------------------------- Posted through http://www.DSPRelated.com
Reply by ●April 13, 20162016-04-13
On Wed, 13 Apr 2016 12:18:49 GMT, N0Spam@daqarta.com (Bob Masta) wrote:>On Tue, 12 Apr 2016 12:09:41 -0700 (PDT), >gyansorova@gmail.com wrote: > >>and I mean deep! The latest idea to send a fleet of probes to Alpha Centauri. The coms will be interesting - 4 years to get a signal back! Interesting problem and humans haven't developed quantum coms yet. > >OK, I'll bite: What advantages might we expect from quantum >coms? As far as I can tell, there is still no hope of >actual faster-than-light communication there. Did you have >something else in mind, or have I missed something? > >Best regards, > > >Bob MastaJust establishing a link at those ranges is extremely difficult, to the point of being essentially impossible. The issue isn't the speed of the link, it's getting it to work at all. Remember that transmitted power density diminishes with the square of the distance, so at those distances you need both massive transmit powers (which a spacecraft wouldn't be able to do), and extremely large, very carefully pointed directive antennas. Since the problem gets worse with the square of the distance it gets intractable pretty quickly once you're looking at distances beyond the solar system. You could launch a massive amount of hardware and leave a trail of breadcrumb relays, but that's an enormous problem in itself. This sort of thing is well understood by anybody who has ever tried to work out a link budget for something like SETI. It's pretty much hopeless for a large number of reasons. So, yeah, saying the coms is challenging is an understatement. About the only possible hope is that somebody may figure out a way to use quantum entanglement for comm, since that would (presumably) work independent of distance. My limited understanding is that this may not be theoretically possible, either, depending on who you talk to.
Reply by ●April 13, 20162016-04-13
On Thursday, April 14, 2016 at 4:24:53 AM UTC+12, Cedron wrote:> >and I mean deep! The latest idea to send a fleet of probes to Alpha > >Centauri. The coms will be interesting - 4 years to get a signal back! > >Interesting problem and humans haven't developed quantum coms yet. > > I don't like to discourage dreamers, but where does this idea come from? > > Why send a fleet? > > The short answer is there will be plenty of time to figure out the > communication problem on the receiving end. Even if the probes could > achieve an average speed of 1/10 the speed of light (67.1 million mph), it > would still take forty years for them to get there. At 1/100 the speed of > light, it will take 400 years to get there. > > So assuming you could somehow employ "spooky action at a distance" for > instantaneous communication, it would still be quite a while before the > message gets received. > > For what purpose? What information is determinable locally that can't be > obtained at a distance? > > As a hypothetical idea, it may be a good platform to sharpen some > thinking. As a practical matter, next to zilch. > > Let's colonize the asteroids first! Forget Mars. > > YMMV. > > Ced > --------------------------------------- > Posted through http://www.DSPRelated.comWhy send a fleet. You send a swarm that co-operate and this introduces redundancy. Each one is small and inexpensive. It's like a hive of bees. Kill one and little happens. What if you want to zoom in on an area or control the craft. You can't do that if there is a 4 year waiting time! It has to be autonomous.
