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NASA Successfully Tests First Deep Space Internet

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NASA Successfully Tests First Deep Space Internet

Postby kopykat » Tue Nov 18, 2008 5:45 pm

PASADENA, Calif. -- NASA has successfully tested the first deep space
communications network modeled on the Internet.
Working as part of a NASA-wide team, engineers from NASA's Jet
Propulsion Laboratory in Pasadena, Calif., used software called
Disruption-Tolerant Networking, or DTN, to transmit dozens of space
images to and from a NASA science spacecraft located about 20 million
miles from Earth.

"This is the first step in creating a totally new space communications
capability, an interplanetary Internet," said Adrian Hooke, team lead
and manager of space-networking architecture, technology and
standards at NASA Headquarters in Washington.

NASA and Vint Cerf, a vice president at Google Inc., in Mountain View,
Calif., partnered 10 years ago to develop this software protocol. The
DTN sends information using a method that differs from the normal
Internet's Transmission-Control Protocol/Internet Protocol, or
TCP/IP, communication suite, which Cerf co-designed.

The Interplanetary Internet must be robust to withstand delays,
disruptions and disconnections in space. Glitches can happen when a
spacecraft moves behind a planet, or when solar storms and long
communication delays occur. The delay in sending or receiving data
from Mars takes between three-and-a-half to 20 minutes at the speed
of light.

Unlike TCP/IP on Earth, the DTN does not assume a continuous
end-to-end connection. In its design, if a destination path cannot be
found, the data packets are not discarded. Instead, each network node
keeps the information as long as necessary until it can communicate
safely with another node. This store-and-forward method, similar to
basketball players safely passing the ball to the player nearest the
basket means information does not get lost when no immediate path to
the destination exists. Eventually, the information is delivered to
the end user.

"In space today, an operations team must manually schedule each link
and generate all the commands to specify which data to send, when to
send it, and where to send it," said Leigh Torgerson, manager of the
DTN Experiment Operations Center at JPL. "With standardized DTN, this
can all be done automatically."

Engineers began a month-long series of DTN demonstrations in October.
Data were transmitted using NASA's Deep Space Network in
demonstrations occurring twice a week. Engineers use NASA's Epoxi
spacecraft as a Mars data-relay orbiter. Epoxi is on a mission to
encounter Comet Hartley 2 in two years. There are 10 nodes on this
early interplanetary network. One is the Epoxi spacecraft itself and
the other nine, which are on the ground at JPL, simulate Mars
landers, orbiters and ground mission-operations centers.

This month-long experiment is the first in a series of planned
demonstrations to qualify the technology for use on a variety of
upcoming space missions. In the next round of testing, a NASA-wide
demonstration using new DTN software loaded on board the
International Space Station is scheduled to begin next summer.

In the next few years, the Interplanetary Internet could enable many
new types of space missions. Complex missions involving multiple
landed, mobile and orbiting spacecraft will be far easier to support
through the use of the Interplanetary Internet. It also could ensure
reliable communications for astronauts on the surface of the moon.

The Deep Impact Networking Experiment is sponsored by the Space
Communications and Navigation Office in NASA's Space Operations
Mission Directorate in Washington. NASA's Science Mission Directorate
and Discovery Program in Washington provided experimental access to
the Epoxi spacecraft. The Epoxi mission team provided critical
support throughout development and operations.


-end-
http://www.nasa.gov/home/hqnews/2008/no ... ernet.html


space walk live:http://www.nasa.gov/multimedia/nasatv/index.html
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Re: NASA SUCCESSFULLY TESTS FIRST DEEP SPACE INTERNET

Postby olephart » Tue Nov 18, 2008 5:56 pm

Pinging Alpha Centauri [164.224.187.99.236.63.53.189.43.212.173.91] with 32 bytes of data:

Reply from 164.224.187.99.236.63.53.189.43.212.173.91: bytes=32 time=8.121LY TTL=243
Reply from 164.224.187.99.236.63.53.189.43.212.173.91: bytes=32 time=8.121LY TTL=243
Reply from 164.224.187.99.236.63.53.189.43.212.173.91: bytes=32 time=8.120LY TTL=243
Reply from 164.224.187.99.236.63.53.189.43.212.173.91: bytes=32 time=8.121LY TTL=243

Ping statistics for 164.224.187.99.236.63.53.189.43.212.173.91:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in Light Years:
Minimum = 8.120LY, Maximum = 78.121LY, Average = 8.12075LY
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Re: NASA Successfully Tests First Deep Space Internet

Postby HouseCrowd » Wed Nov 19, 2008 7:34 am

:lookup:
There are 10 types of people in the World; those who understand binary, and those who do not.
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Re: NASA Successfully Tests First Deep Space Internet

Postby Paladwyn » Wed Nov 19, 2008 9:18 am

Deep Space Porn!!!
Don't roll your chair backwards, you might run over my foot.
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Re: NASA Successfully Tests First Deep Space Internet

Postby Monalisa » Fri Jan 30, 2009 6:41 am

Yup i knew it and feel it as a great success for all of us
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Re: NASA Successfully Tests First Deep Space Internet

Postby NocturnalVagabond » Fri Jan 30, 2009 7:12 am

Image
"I'd hate to be a teetotaler. Imagine getting up in the morning and knowing that's as good as you're going to feel all day"
- Dean Martin
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