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*note for newbie conspiracy watchers - Notice how Weedy starts off with the classic debunker attack ... rude, derogatory ...
... remarks about my intelligence
and that all people who believe in the hoax are “crazy”.
*note for newbie conspiracy watchers ..... even though they can never produce a reference...
Sorry Weedy, just a cursory google “micrometeorite shuttle impact” shows I am VERY correct, and your statement is, well – unfounded….
Micrometeorite debris is a very real threat to the safety of any astronaut. Since the orbiter is designed to spend an indefinite time in space, it is probable that it could be hit by such debris. In turn, the vehicle needs to be able to survive a substantial impact to any location of the orbiter and still be able to carry out its mission objectives.
Two scenarios are likely to occur due to a micrometeorite impact - depressurization or fatal damage to the thermal protection system. Damage to the TPS has been resolved by the use of the new ARMOR plating as opposed to the ceramic tiles used on the shuttle, but for extra security two layers of ARMOR is used so that an impact to the outer layer would not compromise the inner layer's integrity. The details of the TPS and ARMOR can be found in the TPS Subsystem Report.
Depressurization is a very real possibility as well, and in turn the inner layer of the vehicle airframe is lined with Kevlar and Teflon. This, while not maintaining pressure, prevents internals from being damaged by the impact and keeps an "exit wound" from forming, or two breeches in the hull by the same piece of debris. The Kevlar and Teflon will slow the depressurization, allowing the astronauts to enter their pressure suits, or if docked to exit the vehicle and seal the hatch.
Not all debris impacts during spaceflight are detected when they occur, and such impacts should be known before any reentry.
Mark: Did any meteorite damage happen during any of the the STS flights you were on?
Kenneth Cockrell:
Statistically, significant damage from meteorites is almost non-existent. With many years in orbit, the MIR space station, the ISS, and their predecessors (Skylad, Salyut, ect.) suffered no damage that was ever detected by the crews or by any sensors on the vehicles. With much shorter times in orbit, the space shuttle is even less liely to receive meteorite damage.
*skip*
.... We don't fly the shuttle during the Perseus or Leonid acitivity....
*skip*
A slightly bigger risk for us is damge from "orbital debris," man-made objects in decaying orbits aorund the Earth. The U.S. Space Command tracks the bigger pieces of this "space junk", and we plan our flights to avoid everything that we know about.....
*skip*
...Debris that is too small to be tracked does occasionally hit the shuttle. I don't think anyone has ever heard an impact, but many of us have found damage to a window, in the form of a tiny star-shaped crack (like might be made by a pellet gun to a car window) when we looked through it on a new day on orbit.
In the late '80's and early '90's, NASA did some research on the nature of space debris and micrometeorites using the Long Duration Exposure Facility (LDEF) satellite. Space shuttle mission STS-32 retrieved LDEF from orbit. You might be able to find some of the results of that researhc on the NASA web site.
No, I didn’t suggest that, but as I said to Yeti – why doesn’t the Shuttle use the same computers Apollo did?
…so why would the Shuttle need such sophisticated computers now??
Yes, and some "Hoax" conspiracists are really SMART
Total exposure
*skip*
This much they know:
Any trip beyond Earth orbit will involve radiation threats not faced by residents of the International Space Station, which sits inside the planet's magnetic field.
A 2-1/2-year trip to Mars, including six months of travel time each way, would expose an astronaut to nearly the lifetime limit of radiation allowed under NASA guidelines.
The Moon, with no atmosphere, is more dangerous than the surface of Mars. Lunar forays will have to be brief unless expensive shielded habitats are built.
Mission planners knew the Apollo astronauts would be at grave risk if a strong solar flare occurred during a mission. The short duration of each trip was a key to creating favorable odds.
"A big solar event during one of those missions could have been catastrophic," said Cary Zeitlin, a radiation expert at the National Space Biomedical Research Institute at Baylor College of Medicine in Houston. "The risk was known. They gambled a bit."
The Question
(Submitted February 28, 1997)
I wonder if you could tell me exactly what the VAN ALLEN BELT is and how much radiation does it contain, ie how many rems of radiation are there out there? Plus, what protection would organic life need to be protected from this radiation?
The Answer
David Stern, a researcher in another lab here at Goddard, has graciously supplied an answer to your question, given below:
"The radiation belts are regions of high-energy particles, mainly protons and electrons, held captive by the magnetic influence of the Earth. They have two main sources. A small but very intense "inner belt" (some call it "The Van Allen Belt" because it was discovered in 1958 by James Van Allen of the University of Iowa) is trapped within 4000 miles or or so of the Earth's surface. It consists mainly a high-energy protons (10-50 MeV) and is a by-product of the cosmic radiation, a thin drizzle of very fast protons and nuclei which apparently fill all our galaxy.
*skip*
"I looked up a typical satellite passing the radiation belts (elliptic orbit, 200 miles to 20000 miles) and the radiation dosage per year is about 2500 rem, assuming one is shielded by 1 gr/cm-square of aluminum (about 1/8" thick plate) almost all of it while passing the inner belt. But there is no danger.
Originally posted by CidCaldensfey
I feel bad for NASA. I feel bad for NASA because...Even if NASA takes photographs of the moon to disprove conspiracies, people are going to make up conspiracies based on NASAs action to take photographs in the first place. And when photographs are released, they're going to say the photographs have been shooped ;\
-sigh- It's just a never ending thing.
Originally posted by weedwhacker
Doing real research will do wonders.....
Use any tool or slip to distract the thread...
Originally posted by weedwhacker
Good to see you're back...no, that you've returned safe and sound. (didn't want that comment to be taken wrongly...)
Originally posted by mystr
uh-oh! images cropped. What the?
Originally posted by zorgon
Originally posted by mystr
uh-oh! images cropped. What the?
Just right click and 'view image' Its there just to big for the post
Originally posted by zorgon
How is THIS for 'In your face!"
Originally posted by Arbitrageur
I wonder why the scroll bar appears for some wide images, but not others?
Edwin "Buzz" Aldrin describe his experience as the second man on the moon - a desolate place, he said, where the air was so thin he felt like a kangaroo as he bounced on the surface.
Originally posted by zorgon
Originally posted by Arbitrageur
I wonder why the scroll bar appears for some wide images, but not others?
Because certain image sharing sites have been cleared by staff and still function with the [img] tag. Its automatic... if its an acceptable site it puts it in the slide bar box, if not it gives you the 'external image' gif with link
Hope that clears it up
Originally posted by mystr
Still the best optical illusion:
APOLLO15 AS15-P-9625@100%
[atsimg]http://files.abovetopsecret.com/images/member/244551f20c3e.jpg[/atsimg]