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Science/Tech
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Title: NASA working on Voyager 2 data problem
Source: [None]
URL Source: http://www.google.com/hostednews/ap ... 9I8xLsUL17LPPN1dVC9lQD9FHJ0980
Published: May 14, 2010
Author: By JOHN ANTCZAK
Post Date: 2010-05-14 04:52:03 by gengis gandhi
Keywords: None
Views: 136
Comments: 4

NASA working on Voyager 2 data problem By JOHN ANTCZAK (AP) – May 6, 2010 LOS ANGELES — Engineers are working to solve a problem with science data transmissions from the Voyager 2 spacecraft near the edge of the solar system, NASA's Jet Propulsion Laboratory said Thursday. The spacecraft late last month began sending science data 8.6 billion miles to Earth in a changed format that mission managers could not decode. Engineers have since instructed Voyager 2 to only transmit data on its own health and status while they work on the problem.

That engineering data is in a different format and is fine, said Ed Stone, the Voyager project scientist at the California Institute of Technology in Pasadena. Launched in 1977, Voyager 2 and its twin, Voyager 1, explored the giant planets Jupiter, Saturn, Uranus and Neptune and kept on going. Nearly 33 years later, they are the most distant human-made objects.

Stone believes the current problem can be solved and does not think it's related to the spacecraft's age, although that won't be known for certain until the diagnosis.

"This is volatile memory just like in your computer where you boot up," Stone said. "And so occasionally a cosmic ray particle can cause one of the bits to flip, or it can actually have a failure in one of the bits." The fix may be to reset the bit to its proper state or program around it, he said.

It may also be possible to figure out how to decode the data, he said. The spacecraft transmit around the clock and NASA's Deep Space Network listens about 10 hours a day, Stone said. In normal mode, the transmissions are mostly science data, but at a very low rate of 160 bits per second. Voyager 1 is 10.5 billion miles from Earth and in about five years is expected to pass through the heliosphere, a bubble the sun creates around the solar system, and enter interstellar space. Voyager 2 will follow after that.

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#1. To: Prefrontal Vortex (#0)

The spacecraft late last month began sending science data 8.6 billion miles to Earth in a changed format that mission managers could not decode.

ping.

diff data source, basically same message.

'It is better to have less thunder in the mouth and more lightning in the hand.'

- Apache proverb

gengis gandhi  posted on  2010-05-14   4:52:59 ET  Reply   Trace   Private Reply  


#2. To: gengis gandhi (#0)

Where's a really hot bald chick when you need her?

MapQuest really needs to start their directions on #5. Pretty sure I know how to get out of my neighborhood.

SonOfLiberty  posted on  2010-05-14   8:17:15 ET  Reply   Trace   Private Reply  


#3. To: gengis gandhi (#1)

Voyager has discovered cosmic rays, man. Cosmic!

I rise in great respect for the courage and high ideals of Rosa Parks who stood steadfastly for the rights of individuals against unjust laws and oppressive governmental policies. -- Ron Paul

Prefrontal Vortex  posted on  2010-05-14   10:45:15 ET  Reply   Trace   Private Reply  


#4. To: Prefrontal Vortex (#3)

indeed. rather like the sts raw video feeds where the nasa puke says the thing the guys are seeing is a 'lens filter'....somehow fell off that camera from inside the housing and everything.

'It is better to have less thunder in the mouth and more lightning in the hand.'

- Apache proverb

gengis gandhi  posted on  2010-05-14   15:35:56 ET  Reply   Trace   Private Reply  


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