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Originally posted by FoosM
Originally posted by 000063
Go outside on a sunny day. Sunlight has UV radiation. If you go outside for short periods, you become pale (assuming you're white). Go outside a moderate amount, and you get a healthy skin tone. Too much, and you get sunburns and skin cancer.
Similarly, months in space would mean more exposure to radiation than a few days in space. I cannot explain it in any simpler terms.
Ahh, I see.
You have gone from wanting to provide actual facts and evidence, to providing analogies.
Sorry, doesn't help.
Originally posted by Aloysius the Gaul
well I provided a report that is packed full of factsand figures and seems to say that long term missions are quite dangerous.
I am puzzled why you have not commented on it further - if you have solid evidence that it is wrong I'd expect you to say so.
Are you still perusing it perhaps?
Here it is again for anyone who hasn't seen it yet.
edit on 25-7-2011 by Aloysius the Gaul because: (no reason given)
Originally posted by MacTheKnife
Originally posted by FoosM
[long post deleted by moi ... see it above]
The highest dose received from the missions was like 1 rad and change. Does this make sense?
Yes. Part of the problem is that you're using peak numbers as being the flux for the whole transit of the VABs, just as JW (wrongly) does. I've seen the trajectory taken by Apollo enroute to the Moon posted in this thread and a map of the VABs as well. Going just from memory I believe the worst dose rate only happened for
Originally posted by MacTheKnife
Originally posted by FoosM
Originally posted by ConspiracyNut23
reply to post by FoosM
I think they are worried about the galactic cosmic ray exposure, not exposure to solar flare.
Well which one is it, because Im seeing reports for either or.
I dont understand why after 40 years, including the success of Apollo, this is not clearly
agreed upon in the scientific community. There must be a scam going on.
Corporations using scientists to milk unnecessary research money from the Government.
What's not agreed on is human reaction to various types of radiation and dose rates. You may find is amazing that there aren't people willing to be irradiated at different rates and with different energies and particles until they develop cancer (or something) but I don't.
Originally posted by FoosM
Originally posted by Aloysius the Gaul
Are you still perusing it perhaps?
Here it is again for anyone who hasn't seen it yet.
edit on 25-7-2011 by Aloysius the Gaul because: (no reason given)
I have commented on the report. Its you who haven't applied this report to the question I asked.
I asked, based upon the radiation that Apollo received, how long could they have stayed on the moon?
Whats your answer to that?
The amount of radiation received by astronauts depends on several factors including orbital inclination, altitude, position in the solar cycle, and mission duration.
Does this report actually answer that question? Cause I didnt see it.
The trajectory you have seen is wrong and biased.
Well you cant have it both ways.
Either NASA sent biology into space to make sure it was safe for astronauts; which they didnt.
or
As people keep reminding us, the Astronauts were daring test pilots who risked their lives against all odds and came out winners.
Originally posted by FoosM
Well you cant have it both ways.
Either NASA sent biology into space to make sure it was safe for astronauts; which they didnt.
So, as far as I can see, NASA somehow knew about all the dangers of space radiation, and thought it feasible to send multiple ships to the moon without any worry.
But now, in the 21st century, they are coming up with radiation as being the excuse for why we cant go back to the moon, and to Mars. Saying things like, 'we dont fully understand the radiation environment' or, 'we need special shielding materials that dont yet exist', etc.
Now Im surprised that so called truth seekers dont find issue with this. And that if you believe space radiation was never a problem in the past, why do you believe its a problem now?
Somewhere there is a lie. The lie either occurred in the past, or the lie is occurring in the present.
Originally posted by FoosM
Originally posted by MacTheKnife
Originally posted by FoosM
[long post deleted by moi ... see it above]
The highest dose received from the missions was like 1 rad and change. Does this make sense?
Yes. Part of the problem is that you're using peak numbers as being the flux for the whole transit of the VABs, just as JW (wrongly) does. I've seen the trajectory taken by Apollo enroute to the Moon posted in this thread and a map of the VABs as well. Going just from memory I believe the worst dose rate only happened for
Originally posted by DJW001
reply to post by FoosM
Well you cant have it both ways.
Either NASA sent biology into space to make sure it was safe for astronauts; which they didnt.
or
As people keep reminding us, the Astronauts were daring test pilots who risked their lives against all odds and came out winners.
I hope you realize that this is a false dichotomy.
Originally posted by FoosM
Originally posted by MacTheKnife
What's not agreed on is human reaction to various types of radiation and dose rates. You may find is amazing that there aren't people willing to be irradiated at different rates and with different energies and particles until they develop cancer (or something) but I don't.
Well you cant have it both ways.
Either NASA sent biology into space to make sure it was safe for astronauts; which they didnt.
or
As people keep reminding us, the Astronauts were daring test pilots who risked their lives against all odds and came out winners.
So, as far as I can see, NASA somehow knew about all the dangers of space radiation, and thought it feasible to send multiple ships to the moon without any worry.
Originally posted by FoosM
But now, in the 21st century, they are coming up with radiation as being the excuse for why we cant go back to the moon, and to Mars. Saying things like, 'we dont fully understand the radiation environment' or, 'we need special shielding materials that dont yet exist', etc.
Now Im surprised that so called truth seekers dont find issue with this. And that if you believe space radiation was never a problem in the past, why do you believe its a problem now?
Originally posted by FoosM
Somewhere there is a lie. The lie either occurred in the past, or the lie is occurring in the present.
Originally posted by DJW001
reply to post by FoosM
The trajectory you have seen is wrong and biased.
Please produce the correct trajectory.
As for the question you have been perseverating about, no-one can answer it definitively because there are so many variables; that is why there has been renewed interest in studying the long term effects of radiation in space. The only data we have for the Apollo astronauts is what is recorded on their dosimeters. This is the "skin" dosage. Much as you might enjoy the idea, the astronauts were not killed and autopsied so observations of their deep tissue could be performed. Based on the dosimeter readings, they could have spent something like thirty years on the Moon. There are two obvious problems with this:
1. There would certainly be multiple CME's and X- class flare during this time, any one of which could have killed them instantly and
“X-class flares are the most powerful of all solar events that can trigger radio blackouts and long-lasting radiation storms,” disturbing telecommunications and electric grids, NASA said.
Apollo 12
Average Radiation Exposure 0.58
The Sun spews out a constant stream of X-ray and extreme ultraviolet (EUV) radiation. This energy, along with that from cosmic rays, affects the Earth’s ionosphere,
In addition to the daily fluctuations, activity on the Sun can cause dramatic sudden changes to the ionosphere... The Sun can unexpectedly erupt with a solar flare, a violent explosion in the Sun's atmosphere caused by huge magnetic activity. These sudden flares produce large amounts of X-rays and EUV energy, which travel to the Earth (and other planets) at the speed of light... When the energy from a solar flare or other disturbance reaches the Earth, the ionosphere becomes suddenly more ionized, thus changing the density and location of its layers. Hence the term “Sudden Ionospheric Disturbance” (SID) to describe the changes we are monitoring and also the nickname of our space weather monitoring instrument, SID.
Sudden ionospheric disturbances (SID) such as SWF, SEA,
SPA and others are usually associated with solar proton flares
Solar flares of importance 3 or 3+ sometimes generate
energetic protons and heavier nuclei of Bev-energy range which
are detected as an unusual increase of cosmic-ray intensity by
ground based observation
LDE-type flares (Long Duration Events in SXR) are associated with the interplanetary protons (SEP and STIP as well), energized coronal arches and radio type IV emission.
NASA doesnt provide one so there is no way it can be analyzed.
Really DJW001?
Really?
an X class flare could have killed them... instantly?
“X-class flares are the most powerful of all solar events that can trigger radio blackouts and long-lasting radiation storms,” disturbing telecommunications and electric grids, NASA said.
I mean, I agree with you, I always thought that such flare would kill Apollo astronauts.
Im glad you admit to this. But now you have to explain how Apollo 12 survived the flares.
Either the flares are not that dangerous, either Apollo shielding is that advanced...
Proof that seven X-Class flares occurred during Apollo 12.
SEVEN.
DIdn't you say they should have been killed instantly DJ? Obviously the shielding of Apollo was so advanced that it could block SEVEN Class "X" Solar Flares and several "M" class flares.
Solar flares can last for hours to days. They are still, and have been, unpredictable.
A low dose flare would, for example, require 9 inches of aluminum to bring it down to 1.5 rads.
A high dose, in the BeV range, would require, like five feet of structure to shield against.
All these requirements were met for those flares. So the chance the those flares spewed deadly protons is... undeniable.
Originally posted by FoosM
Originally posted by DJW001
reply to post by FoosM
Originally posted by FoosM
The trajectory you have seen is wrong and biased.
Please produce the correct trajectory.
NASA doesnt provide one so there is no way it can be analyzed.
Originally posted by FoosM
Solar flares can last for hours to days. They are still, and have been, unpredictable.
A low dose flare would, for example, require 9 inches of aluminum to bring it down to 1.5 rads.
A high dose, in the BeV range, would require, like five feet of structure to shield against.
So supposedly, even the thickest portion of the CM would be inadequate as shielding against Solar Flares.
Nobody, not even NASA has stated otherwise.
Funny, I've often asked myself what it would take to help you understand.
Originally posted by FoosM
Originally posted by 000063
Go outside on a sunny day. Sunlight has UV radiation. If you go outside for short periods, you become pale (assuming you're white). Go outside a moderate amount, and you get a healthy skin tone. Too much, and you get sunburns and skin cancer.
Similarly, months in space would mean more exposure to radiation than a few days in space. I cannot explain it in any simpler terms.
Ahh, I see.
You have gone from wanting to provide actual facts and evidence, to providing analogies.
Sorry, doesn't help.
Speaking of "presenting evidence", where on those numbers on flares you claimed were produced earlier in the thread? Because I looked, and all I found was you refusing to produce said numbers and desperately trying to change the subject when asked for proof, or ignoring it entirely. Much like you're doing now, actually.
Originally posted by 000063
The point is that you claimed that NASA has not addressed the "killer flares". You have provided no evidence of this. You have not even admitted you were wrong.
Originally posted by FoosM
Originally posted by 000063
Tell you what, I'll do my best look up the information you're asking for right after you produce the "killer" solar flare/SPE numbers to support your claim. I can't guarantee I'll find it, but I'll do my best.
I mean, I looked up what evidence there was of solar flares presented in this thread, and I found you making a similar claim that "major" flares/SPEs occurred. When asked what was "major", you said you were using NASA's definition. When asked what that definition was, you asked the debunkers what NASA's definition was, and changed the subject in the usual fashion.edit on 2011/7/22 by 000063 because: /
Well whats the point? If Apollo could withstand major solar flares, then it really doesnt matter which flares I mention.
Because you are exposed to more radiation the longer you are in space.
So its quite clear that Apollo's aluminum hull, would have sufficiently protected the astronauts from even a massive "killer" flare. And obviously they dont have to go to the moon during Solar Max, they can go during Solar Min. What is the excuse for NASA not returning to the moon for longer missions or Mars? Why are they saying the issue is radiation?
Go outside on a sunny day. Sunlight has UV radiation. If you go outside for short periods, you become pale (assuming you're white). Go outside a moderate amount, and you get a healthy skin tone. Too much, and you get sunburns and skin cancer.
Similarly, months in space would mean more exposure to radiation than a few days in space. I cannot explain it in any simpler terms.
You said "wrong and biased", FoosM. There's no way you can say that unless you have the correct trajectory to compare it to. Unless, like usual, you were being reflexively contrarian, and bluffing.
Originally posted by FoosM
Originally posted by DJW001
reply to post by FoosM
The trajectory you have seen is wrong and biased.
Please produce the correct trajectory.
NASA doesnt provide one so there is no way it can be analyzed.
Oh, good, so you're withdrawing your claim of "killer" flares and events. Glad to have that cleared up.
Really DJW001?
Really?
an X class flare could have killed them... instantly?
You know you are wrong DJ. X-class flares have no effect against CM and LM shielding.
First, produce your source saying that X-class flares have no effect against CM and LM shielding.
Probably no effect on Astronaut suits! Where did you get this idea that it did? Whats your source?
NVM, the killer flares and SPEs are back on.
I mean, I agree with you, I always thought that such flare would kill Apollo astronauts.
Originally posted by 000063
NVM, the killer flares and SPEs are back on.
Originally posted by FoosM
Well whats the point? If Apollo could withstand major solar flares, then it really doesnt matter which flares I mention.
"A large sunspot appeared on August 2, 1972, and for the next 10 days it erupted again and again," recalls Hathaway. The spate of explosions caused, "a proton storm much worse than the one we've just experienced," adds Cucinotta. Researchers have been studying it ever since.
Cucinotta estimates that a moonwalker caught in the August 1972 storm might have absorbed 400 rem. Deadly? "Not necessarily," he says. A quick trip back to Earth for medical care could have saved the hypothetical astronaut's life...
Surely, though, no astronaut is going to walk around on the Moon when there's a giant sunspot threatening to explode. "They're going to stay inside their spaceship (or habitat)," says Cucinotta. An Apollo command module with its aluminum hull would have attenuated the 1972 storm from 400 rem to less than 35 rem at the astronaut's blood-forming organs. That's the difference between needing a bone marrow transplant or just a headache pill.
Modern spaceships are even safer. "We measure the shielding of our ships in units of areal density--or grams per centimeter-squared," says Cucinotta. Big numbers, which represent thick hulls, are better:
The hull of an Apollo command module rated 7 to 8 g/cm2.
So its quite clear that Apollo's aluminum hull, would have sufficiently protected the astronauts from even a massive "killer" flare. And obviously they dont have to go to the moon during Solar Max, they can go during Solar Min. What is the excuse for NASA not returning to the moon for longer missions or Mars? Why are they saying the issue is radiation?
www.evms.edu...
James van Hoften, a former crew member on Discovery and Challenger who chaired the study committee, encountered space radiation during a spacewalk outside Challenger. "I saw what looked like a white laser line go right through my eyes," he said. "I thought, 'Well this can't be good…having high-energy particles fly through your head.' "
The biological effects of radiation exposure vary and are not entirely understood. Much of what is known comes from the study of accidental occupational radiation exposure, and from atomic bomb survivors, who received massive doses of gamma rays instantaneously. An atomic bomb is very different than what astronauts would experience, although the committee pointed out that, despite years of study, we don't know exactly what to expect in deep space.
Originally posted by DJW001
reply to post by FoosM
NASA doesnt provide one so there is no way it can be analyzed.
Pay attention FoosM, it has been provided in this thread.
Yes, a sufficiently large flare could have killed them instantly if it were directed at them while they were unsheltered on the surface of the Moon. Why do you suddenly not understand this?
The Sun can unexpectedly erupt with a solar flare, a violent explosion in the Sun's atmosphere caused by huge magnetic activity. These sudden flares produce large amounts of X-rays and EUV energy, which travel to the Earth (and other planets) at the speed of light... When the energy from a solar flare or other disturbance reaches the Earth, the ionosphere becomes suddenly more ionized, thus changing the density and location of its layers. Hence the term “Sudden Ionospheric Disturbance” (SID) to describe the changes we are monitoring and also the nickname of our space weather monitoring instrument, SID.
The X-ray, radio and optical emissions during the solar flare event are the indicators (perhaps secondary manifestations) that proton acceleration is occurring.
Solar flares of importance 3 or 3+ sometimes generate
energetic protons and heavier nuclei of Bev-energy range which
are detected as an unusual increase of cosmic-ray intensity by
ground based observation
LDE flares are important with regard to forecasting proton showers.
An example of proton events impacting spacecraft from
flares on the 'invisible' portion of the sun, is the event ob-
served on 8 and 9 August 1970. During this event the entire
inner heliosphere was populated by energetic particles...
A possible flare located approximately 400 be-
hind the east limb was assumed to be the source of this parti-
cle event.
CMEs are associated with slow LDEs very often. It is well known, that there is temporal relationship between CMEs and associated flares. The duration of the CMEs acceleration phase is related to the duration of the rise phase of a flare.
FROM SPACE DISTURBANCE FORECAST CENTER ESSA BOULDER COLO
SDF NUMBER 450A ISSUED 0400Z 19 NOV 1969
CLASS M AND X, FLARES ARE EXPECTED DURING THE NEXT 24 HOURS
ESPECIALLY DURING THE 1200-2400Z PERIOD.
A. OF THE 2 NE COlYlPLEX CENTERS THE REGION NEAR N14 E34 REMAfNS ,THE
MORE ACTIVE. THREE SIGNIFICANT FLARES HAVE OCCURRED, THERE SINCE
THE LAST MESSAGE NAMELY CLASS X'S AT 18/1636(28) AND 2117(S8),
AND A POSSIBLE M AT APPROXIMATELY 0121(lN) TODAY. CONCERNING THE
1636Z FLARE NO INDICATION OF SOLAR PROTONS HAS BEEN DETECTED A~ OF
THE TIME OF WRITING. THIS FLARE OF GREATER THAN 1 1/2 HOUR DURATION
OCCURRED NEAR THE CENTER OF THE LARGE HORSESHOE-SHAPED PENUMBRAL
STRUCTURE PRESENTLY NEAR N14E34. RADIO NOISE EMISSION AT 10eM WAS
OF THE ORDER OF 1000 FLUX UNITS WHILE THE SPECTRUM OF RADIO WAVE-
LENGTH OBSERVATIONS DISPLAYED A CLASSIC V-BURST PROFILE.
B. IT APPEARS VERY LIKELY THAT SOLAR WIND GEOMETRY PRECLUDES
ENERGETIC PROTONS FROM BEING DETECTED IN THE VICINITY OF EARTH AS
A RESULT OF THE 18/1636Z FLARE. CONTINUED CLASS M AND X ACTIVITY
IS DEFINITELY EXPECTED FROM THE N14E35 REGION DURING THE NEXT 2
DAYS. APPROXIMATELY 15 TO 20 HOUR INTERVALS OF TIME SHOULD SEPARATE
THE PERIODS OF ACTIVITY.
FLARE ,AND PROTON EVENT PROBABILITIES FOR THE NEXT THREE 24 HOUR
PERIODS BEGINNING 19 NOV/0400Z ENDING'23 NOV/0400Z.
CLASS M OR GREATER 90/90/90
CLASS ,X 50/50/50
PROTON EVENTS 25/35/50