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Author Topic: 41 Year anniversary of NASA's greatest achievement Post a Reply Back to Topics
font_of_truth

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Wyoming

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Message Posted: Jul 20, 2010 10:14:01 AM

Today marks 41 years since AMERICANS first stepped on the moon. We can all point with pride to the scientific and economic benefits of that effort. From the NASA Budget on wikipedia, we see numerous illustrations that for all the money spent to explore beyond the earth, we have received approximately a 33% return on that investment. Compare that to less than 1% you receive on your money in a bank. There is probably NO other government program that provided such a return for the taxes it used.

Benefits of Space Exploration
One of the familiar complaints that NASA receives when its budget comes up for approval is that "...the money really ought to be spent down here instead of up there". Leaving aside the fact that NASA's civil servants and contractors all live here on Earth, and thus the money is spent here, NASA's fifty years of research and development have resulted in a wide range of inventions and processes, ranging from the complexity of image processing through the simplicity of fire-resistant kid's pajamas.
[http://www.hq.nasa.gov/office/hqlibrary/pathfinders/spinoff.htm]

Congratulations Neal, Buzz, and NASA. In the future, I only hope the taxes I contribute will be used to support a return toward your original charter and the types of achievements that make me so proud to be an American.
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nayla2011
All-Star Author Toronto

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Message Posted: Aug 8, 2011 5:09:03 PM

And your name is 'font of truth', yeah.
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Sneakers55
Champion Author Houston

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Message Posted: Aug 6, 2011 9:34:24 PM

They were going to finish STS-135 on July 20, 2011 but they decided to delay the landing to the 21st. Guess letting the astronauts have some extra time in zero-G overrode the symbolism of finishing the last shuttle mission on the same day of the year as the first moon landing.
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font_of_truth
Champion Author Wyoming

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Message Posted: Jul 20, 2011 1:35:21 PM

It's been ANOTHER year, and so far Sneakers55 (thumbs up) seems to be the only other person on this thread who remembers today's date.
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Sneakers55
Champion Author Houston

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Message Posted: Oct 2, 2010 6:19:31 PM

Well, for the last 30 years, they've been going back and forth between low earth orbit and the ground. And they've been using ancient technology to do it.

The main computers in the Space Shuttle were quite powerful for a machine designed in 1972. (Hint: I was in high school in 1972. I retired at 55. They're using the same architecture with an additional four bits of addressing added when they ran out of memory.) They used five of them, four of them running the same code and able to lock out a computer that was generating results that didn't match. They have had failures on orbit, one severe enough that if they wouldn't have been able to reboot they would have been coming back on a never-flown piece of software known as the Backup Flight Software. It was just enough functionality to transition control and get them back on the ground in one piece.

When they started out, the Space Station used forty-odd Intel 80386SX chips. When I departed about a year ago, they were working on replacing the five most overloaded machines with Pentiums. I suspect they're still doing ground testing as it takes a while between the time the coders finish to the testers finishing. (I hear from old Space Station hands occasionally, usually when things go wrong.)

They've got a nice operator interface now. They used to have off-the-shelf IBM ThinkPad A31P laptops. They were beginning to get old and unreliable (they'd run them so many hours that a burnt out backlight was a weekly occurrence), so they were replaced with off-the-shelf Lenovo T61p ThinkPads. Somebody who was in a position to know told me they have roughly 90 ThinkPads. I was astonished.
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font_of_truth
Champion Author Wyoming

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Message Posted: Aug 17, 2010 8:03:22 PM

Almost a month of crickets chirping.. Am I the only one who remembers American achievements?
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