The Dot in .mars
Skynet writes "CNN has a really cool interview with Chad Edwards, manager of the Mars Network Office, about NASA's desire to improve telecommunications to and from Mars. They plan to get a 1MBps link up by 2007. They also discuss the possibility of multiple Internets spread throughout solar system, all interconnected. Very interesting discussion."
Yes, in the light of more than a few seconds turnaround (basically anything in space further away than the Moon), nothing but email would survive as a communication form. It is however, very suited for much larger delays too, I have some unanswered email in my inbox dating back a few years... (I mean to reply soon...).
OTOH, nothing prevents us to come up with something email like, but utilizing video technology.. Sending a new message is trivial, just press record, and at the end, stop it, the interesting bit comes when replying. I hope MS dies when we need this tech, or you'll see "Original message follows" at the end of your partner's video, and you can see your own again :)
Seriously, imagine a better way, you see your girlfriends face as she hears your message, she pauses, and tells the stories, and then unpauses to go on..
Of course, the personal communications are not the single form you need from Mars (and obviously, in the first years, we won't have any), but most of it can be reduced to a form of offline, spooled data transfer. UUCP anyone? It (or some flashback of it) is very easily suited for bulk, offline data transfer. You could just program the local machinery to transfer data to be sent to a central spool machine, which then sends it away to Earth (or Pluto, for that matter). It's not internet, really, but IP need not be thrown away; and locally (ie. on Mars), TCP/IP is just as efficient, and well-working as here for us.
For the real bulk transfer, something else would be needed than TCP, imagine that any missed packet can get reported only many minutes later, and you don't want to restart the connection then.. Add a bit forward error correction, and large buffering to cope with minutes (millions) of un-acked packets, and here we go.
Shall I work on this, or let your billions of tax dollars work on this for a few years to get this built? :)
"Ten years from now, they could do it in a few seconds." -- The Racketeer of the Hellfire Club, 1993, Phrack 42
Okay, maybe this is totally out to lunch. But I've heard stuff like this before. Any idea if this is legit or not?
If you split a beam of polarized light, and then do something to one (i.e. rotate the polarization), supposedly you can detect it on the other one, and it's instantaneous (i.e. faster than light). So what if you split a powerful laser somewhere equidistant from Mars and the Earth (try finding a place like that!), and had stations on both ends...could you communicate faster than light in that fashion?
Or have I been mislead?
Even sadder is 2001:Odyssey.
Both are technically and economically possible,
but we lack the societal will.
Nasa saved the Galileo Probe after its main
attenna failed using compression. The emergency
back up attenna has like one percent of the capacity of the main attenna or about the speed of Morse code.
Every couple months Galileo passes by one of
main moons and stores a dozen or two pictures
on the tape recorder. Then it transmits them
in compressed form over a day per image.
The Galileo computers were reprogrammed from
Earth to implement compression after attenna
failure.
Galileo acheived 70% of its objectives in the
main mission, and was extended several years.
The bottleneck to extension is not the resources
on Galileo but time on the Deep Space Network.
This is less of a problem due to the Mars probe
failures.
When re-reading Ray Bradbury's seminal work
recently, I niced most of the dates were
between 1999 - 2006.
Why not? The ad campaign for Windows 95 claimed that it would "make a grown man cry." Microsoft already is the PAIN in Uranus.
--
--
"Outlook not so good." That magic 8-ball knows everything! I'll ask about Exchange Server next.
So if we will have a 1mbps line to Mars will we still need PAWS to be so flexible? Will I finally be able to send mp3's to the University of Mars? Personally I was hoping for sftp or scp - but all I've ever heard about is ftp to the UM.
[if you don't get it read linux/net/ipv4/tcp_timer.c]
What kind of crack are you smoking?
Yes it's a simple laboratory process to turn CO^2 to Oxygen, but there are several problems.
First the average atmospheric pressure on mars is about 5 milibars. That means the atmosphere is 1/200th as thick as earths. Even if *ALL* the CO2 were converted to O2, it would still be about 1/200th as thick. This of course ignores the fact that a pure oxygen atmosphere is a bad thing fire-safety wise.....
Second, it's cold as hell there. Average temperatures on Mars make Antarctica look like the Bahamas.
Third, mars is a PLANET it's going to take a hell of a lot of effort to make it habitable. It's not going to be done in 20 years, it likely won't be done within any one person's lifetime. The most optimistic estimates I've seen are 100-400 years assuming technologies not yet developed. Many estimates are in the greater than 1000 years range.
If you want to know some real facts instead of just spouting crap, try reading Robert Zubrin's "The Case For Mars".
It includes a whole chapter on terraforming mars. Plus chapters on the technologies needed before we can send anyone to Mars.
He just mentioned that they were going to translate it to an IP stack :)
:)
Personally I vote for ICP/IP
(Interplanetary Control Protocol over IP)
or maybe TCP/IP/ICP
This space for rent. All reasonable inquiries will be entertained at proprietors discretion.
True.
I remember for the last few years feeling a sense of dread as 2001 aproached. Not "end of the millenium" blues, just "unrealized potential".
It makes me sad that as a society we seem to have no desire to push pioneer anything anymore. Granted the frontiers have gotten tougher to reach (sail across the void vs. sail across the ocean), and the challenges are more technologically demanding (single stage to orbit vs. what longitude/lattitude am I at), and that only a small percentage of people actually took the challenge to explore...
Ah heck. This is getting me too depressed, I'm just going to keep thinking about the Pan-Am logo on the side of the 2001 orbiter and smile.
This space for rent. All reasonable inquiries will be entertained at proprietors discretion.
--- Hot Shot City is particularly good.
When you're stuck on a space station on mars for a year, porn is good no matter how long it takes to download. ;)
load "linux",8,1
Everyone knows Mars can be made habitable by finding the secret alien oxygen-release compound that is buried deep underground. All you have to do is place your hand in the little hand mold and voila! Hasn't anyone seen Total Recall???
Execute? [Y/N] _
Weel, that is pretty much the definition of 'internet'.
Best Slashdot Co
Interesting how they plan to translate all this to a standard IP stack, described in the article a bit vaguely as thus:
"We're working on developing a layered architecture that would allow us to move data from point to point without worrying about the fine details. That way, as new technologies come along, we'll be able to make changes to the underlying physical infrastructures without disturbing the protocols that are already in place. So we'll have a layering of how we flow information across some infrastructure that lets us evolve it in time and accommodate technology infusion without having to scrap our investment."
This technology could be of great use to those in rural and/or remote areas here on Earth, especially where habitat and conditions are most demanding (Lord knows, broadband is currently beyond their reach in most cases..).
Additionally, if they can really pull this off, it could be the next NASA "killer app" like Velcro/Teflon/Tang/etc., improving their profile in the public eye dramatically by developing new "space-age" technology with everyday usefulness. Nice!
_
props to all dead homiez
Don't you think that before we actually decide to terraform this place, we should investigate it thoroughly first? Sure, we could try to head the place up by dumping a few nuclear reactors there, changing the atmosphere, but it would also mean that we could never investigate it in it's original form. And, with NASA saying they found life on Mars, that might just be worth doing no?
And what're his pings going to look like from almost 49 million miles away?
Probably a lot like any AOL user.
We all know that crap is king
Give us dirty laundry!
Or IRC. 8 minutes lag is nothing compared to what you can get on IRC.
Rich
I suspect NASA will end up inventing a new protocol for this. IP really wasn't designed for the kind of latencies and packet lossyness that you get on deep space links.
Go Badgers! -- #include "std/disclaimer.h"
Mars is going to get broadband before I do.
For all intensive purposes, "whom" is no longer a word. That begs the question, "who cares"?
Umm... doesn't multiple interconnected internet's just equal 1 internet?
I knew it wouldn't be long before a cable modem comment was mentioned.
kinda makes you wonder that with such a long mission, would NASA allow its astronauts to bring along porn? (seriously)
It's easy for me to understand that particles themselves (in this case electromagnetic energy) cannot travel faster than the speed of light. Thus, the large amount of "lag" between Earth and Mars.
However, would it be possible to do something similar to the following poor example? If not, please explain.
1) String a rope between two points, one near Mars, one near Earth (yes, I realize the problems this would cause due to orbits and whatnot).
2) Rather than sending electromagnetic energy between the two points, simply "tug" on the rope. Rope only has to move a few millimeters rather than billions of miles.
Please note that I have never taken a physics class... and it shows.
Are there any other crazy concepts for transmitting data faster than the speed of light? Perhaps something along the lines of the "Rope Trick" I suggested a few threads back?
...that more bandwidth-ignorant people aren't already wondering why Mars doesn't at least have a 2.0 Gbit/sec link since they themselves are able to get 4.5 Gbit/sec from their local cable company in Omaha, Nebraska.
Hang on, did I hear that right?
:-\
We can't think of a practical purpose for the ability to communicate arbitrary information between two different PLANETS with an 8-minute delay?
There are still lots of practical uses of first-class mail, which takes about a day to deliver non-arbitrary information 50 miles!
It's certainly a situation which terrestrial communications haven't had to face up to very much; even current satellite relays only give a delay of a few seconds. The increased latency means you have to use better FEC techniques rather than relying on an ARQ retransmission system, but the basic principles are still due to Shannon (RIP).
Most of the trouble faced by communications software and hardware stems from operating in a regime of limited bandwidth or continuously changing router loading, rather than high delays. But as the article points out, scientists have adressed these problems on previous space missions, and the techniques are firming up to make the whole thing more interoperable.
Now we just need to work out how to colonise the planet, before we completely destroy our own one
These sigs are more interesting tha
D00D U CAN JUST USE UUCP
UUCP ROKS MY DAD HAS A DIAL UP 4 EMALE
.
i wonder what will happen as the human race expands into the outer reaches of the solar system. do you think any company will really want to be known as "the dot in .uranus?"
It wasn't that long ago that people were using UUCP and bang paths to push mail around. The jargon file entry for Internet address mentions that the term is used loosely for anything reachable from the Internet, including bang paths.
But the idea of trolling from Mars should sound intriguing enough to the average American that people might actually get interested in it again.
red sand beach party 2010
www.munich.de> traceroute www.stuttgart.de
traceroute to www.stuttgart.de, 60 hops max, 40 byte packets
1 www.munich.de (111.111.111.111) 2 ms 1 ms 1 ms
2 munich.dtag.de (212.183.251.1) 2 ms 1 ms 1 ms
3 boned.dtag.de (212.183.1.1) 12 ms 11 ms 11 ms
4 HH-gw10.usa.net.dtag.de (212.183.3.1) 22 ms 21 ms 21 ms
5 nyc-gw13.usa.net.dtag.de (212.183.3.1) 342 ms 341 ms 341 ms
6 devil01.apdfw.com (204.181.126.82) 400 ms 321 ms 511 ms
7 madmax.ft-monroe.cmpu.net (204.181.110.10) 291 ms 160 ms 320 ms
8 cisco.2501-2.deepspace.net (204.181.110.1) 4261 ms 4280 ms 4291 ms
9 ftmadmax.net.mars (204.181.110.10) 4210 ms 4200 ms 4241 ms
10 23-189.orbital.nasa.gov (128.183.50.1) 8222 ms 8221 ms 8221 ms
11 rtr-cne-e.gsfc.nasa.gov (128.183.50.1) 8222 ms 8221 ms 8221 ms
12 rtr-wan1-cf.gsfc.nasa.gov (128.183.251.1) 8222 ms 8221 ms 8221 ms
13 rtr-internet-ef.gsfc.nasa.gov (192.43.240.36) 8226 ms 8224 ms 8224 ms
14 sl-mae-e-f0-0.sprintlink.net (192.41.177.241) 8227 ms 8325 ms 8318 ms
15 sl-bb5-dc-6-1-0.sprintlink.net (144.232.8.25) 8341 ms 8347 ms *
16 sl-bb3-dc-4-0-0-155M.sprintlink.net (144.232.0.6) 8329 ms * 8348 ms
17 144.232.8.113 (144.232.8.113) 8351 ms 8343 ms 8340 ms
18 sl-bb1-atl-4-0-0-155M.sprintlink.net (144.232.1.198) 8340 ms * 8361 ms
19 sl-bb5-fw-1-0-0.sprintlink.net (144.232.8.98) 8386 ms 8384 ms 8379 ms
20 sl-bb1-fw-4-0-0-155M.sprintlink.net (144.232.1.150) 8386 ms 8385 ms *
21 sl-gw13-fw-0-0.sprintlink.net (144.228.30.17) 8387 ms * *
22 sl-comp-3-0.sprintlink.net (144.228.137.14) 8391 ms 8390 ms *
23 sl-stuttgart-1-0.sprintlink.net (144.228.138.14) 8391 ms 8390 ms *
24 www.stuttgart.de (222.222.222.222) 8391 ms 9040 ms *
Trace complete
I'm still trying to figure out what people mean by 'social skills' here.
Well, I guess that answers THAT question.
The REAL jabber has the /. user id: 13196
The REAL jabber has the user id: 13196
What you do today will cost you a day of your life
Mars is 4 light minutes away from the earth. Even if we had things working at light speed, there would be an eight minute delay between a request and a response... It sounds nice, but I can't really think of a practical purpose for it, except for perhaps e-mail...
When encryption is outlawed, ?o'AZ-,++o+i++##4AoA+-/-C++bI+/.+~
Seriously though, the data rate of 1Mbps is pretty pathetic. I have a cable modem that is faster than that. I am writing communications firmware for a satellite that will be relaying data back to Earth at over 20 times that speed via X-band. If we want broadband, let's really get it rather than settling for something that will be saturated shortly after deployment.
Quick, someone trademark Mars Online, MOL, and Marslink.net.
The International Astronomical Union name for the planet is "Mars".
.ma already is used for Morocco
The web site you point to mentions that English is the international language for professional astronomy.
And
d00d! w3 0wn j00! @ll y0r r0v3r R b3l0ng 2 us!1! PH34R 0UR M4D SK1LLZ!!!!
Basically, latency and bandwidth have nothing to do with each other. The reason we perceive latency to affect bandwidth on the internet is because the internet requires acknoledgements for every n packets. That means that if you have a high latency, it'll take awhile for the ACK to come back and thus you slow down the transmission. If you design a protocol that takes into account that an ACK takes 8 minutes to arrive, you can get full bandwidth at high latency. You could even use TCP, if you expand the sliding window to allow it to send, say, 16 minutes worth of packets without requiring an ACK. It would suck for telnet, but streaming data (which is what NASA wants to do) would be fine.
Go Badgers! -- #include "std/disclaimer.h"
Just imagine being on Mars and being unable to read /. for a whole week because Earth and Mars are on opposite sides of the sun. Will you be tough enough to survive it?
#naabhaprzrag, #sverubfr-000, #agi-fcbafberq, negvpyr[pynff*=' negvpyr-ary-'] { qvfcynl: abar !vzcbegnag; }
*shudder* I apologize for the word "Ameriocentric."
.ge, it's .de for Deutchland.
.ma domain? or would that suggest that residents of Massachusetts, USA, are not of this Earth?
s .h tml for further reading.
When domain names were drawn up for nations, we used ISO 3166, which was agreed upon by people who don't only speak English. Germany isn't
Granted, we don't know the Latin spelling of what Martians call their home planet (nevermind their native tounge), but I find it hard to believe that "Mars" is the only name for that particular moving star in the sky.
Italian, Spanish, Romanian: "Marte"
Czech: "Smrtonos"
Arabic (the language that many stars are named in) "Merrikh"
Hebrew: "Ma'adim"
Mandarin: "Huoxing"
Japaneese: "Kasei"
Most languages seem to agree on using an "M" sound to start the word. Perhaps we should use the
http://www.seds.org/nineplanets/nineplanets/day
bash-2.04$ ping -i 100000 pathfinder.mars
PING pathfinder.mars (208.56.123.4): 56 data bytes
request timed out
request timed out
request timed out
64 bytes from 208.56.123.4: icmp_seq=3 ttl=245 time=86603.712 ms
request timed out
request timed out
Would be kinda cool to set up a quake2 server at mars, even thou the ping would suck.....
Feed the need: Digitaladdiction.net
I'm sorry, but having 4 or 5 probes on an extremely high-latency link, probably not directly connected to the Internet, does not qualify to be part of the Internet. It will be decades before anything beyond low earth orbit will attain enough connectivity to really become connected to the Internet.
Don't get me wrong, I'm fascinated by NASA's Deep Space Network and everything, but we're not there yet. Hell, even the combined bandwidth of all low earth orbit satellites is miniscule compared to ground links.
[an error occurred while processing this directive]
* we do not increase the rtt estimate. rto is initialized
* from rtt, but increases here. Jacobson (SIGCOMM 88) suggests
* that doubling rto each time is the least we can get away with.
* In KA9Q, Karn uses this for the first few times, and then
* goes to quadratic. netBSD doubles, but only goes up to *64,
* and clamps at 1 to 64 sec afterwards. Note that 120 sec is
* defined in the protocol as the maximum possible RTT. I guess
* we'll have to use something other than TCP to talk to the
* University of Mars.
So maybe we're a while off, eh?
-----
Somehow I don't see this as all so wonderful...
Mars is going to get broadband before I do out here in the stix, damn!
It's NOT fair I tell you...
If it don't GO... chrome it. ~ Frank Banks
Chad Edwards, when asked about the possibility of online gaming to Mars, said that they were concerned about high ping times. Edwards did say that they are confident, however, that their ping times will be lower than those currently enjoyed by players on Blizzard's battle.net service.