Lethal Gamma Rays from the Moon?

[rodin]

The Moon as seen in gamma rays by the Compton Gamma Ray Observatory. Surprisingly, the Moon is brighter than the Sun at gamma ray wavelengths.

www.newworldencyclopedia.org/entry/Gamma_ray

So if we could shield out all other radiation we could survive for days standing on a Sunspot and suffer no long term ill effects?

[Jason Thompson]

Rodin, do you have any idea of the quantitative data that accompanies this image? I suggest you look it up. The fact that gamma rays are being emitted does not mean they are being emitted at dangerous levels.

As a hint, look at the background of that image, which still shows lots of gamma radiation from the surrounding space.

[Cavorite]

Also, you may want to look up this thing known as the inverse square law. If a candle held 10cm from my eyes appears brighter than a blast furnace at 1km, does that mean I could stand 10cm from a blast furnace with no ill effects?

Are you abandoning your previous threads? Since your return from your holiday you seem a lot less interested in putting forward arguments you are willing to debate as opposed to random anthill-kicking.

[AtomicDog]

the Earth as seen in gamma rays:



www.sciencedaily.com/releases/2005/04/050411140248.htm

Oh noes! We must all be zombies!

[randombloke]

Interestingly, the caption for the Rodin's otherwise unsourced image at a different wiki-based encyclopaedia is much more informative:

The Moon as seen by the Compton Gamma Ray Observatory, in gamma rays of greater than 20 MeV. These are produced by cosmic ray bombardment of its surface. The Sun, which has no similar surface of high atomic number to act as target for cosmic rays, cannot be seen at all at these energies, which are too high to emerge from primary nuclear reactions, such as solar nuclear fusion.[3]

It even includes a reference to the actual source. How about that.

[capricorn1]

Sept 10, 2010 7:19:01 GMT -4 rodin said:

The Moon as seen in gamma rays by the Compton Gamma Ray Observatory. Surprisingly, the Moon is brighter than the Sun at gamma ray wavelengths.

www.newworldencyclopedia.org/entry/Gamma_ray

So if we could shield out all other radiation we could survive for days standing on a Sunspot and suffer no long term ill effects?

That's a bit coincidental.....I was reading about this only a few days ago...
www.lpi.usra.edu/lunar/missions/apollo/apollo_15/experiments/gamma_ray/

Rodin, the Sun emits enormous gamma rays, far more than the Moon. They get absorbed by the compressed plasma as they are emitted.
www.mit.edu/~goodmanj/madsci/878483565.Ph.r.html

Hope that helps.....the Moon isn't dangerous as regards gamma rays. No air and occasional solar flares, the odd micro-meteorite maybe.

[Cavorite]

Interesting, capricorn1. I just assumed that the brightness was an apparent versus absolute magnitude thing. Is that still a contributing factor, though? How would an equidistant moon and sun compare? I haven't found any answers in the googling I've done so far. I would have thought that the corona would generate at least some gamma radiation.

[PhantomWolf]

Besides, if the moon was a lethal emitter of Gamma Rays, we'd already be dead long before going there because the Earth isn't protected from Gamma Radiation.

[Cavorite]

Well, the atmosphere counts for something. Life on the ISS would be a bit more exciting, though.

[Bob B.]

Lethal Gamma Rays from the Moon?

Gamma rays, yes. Lethal, no.

[AtomicDog]

Sept 10, 2010 8:40:11 GMT -4 Bob B. said:

Lethal Gamma Rays from the Moon?

Gamma rays, yes. Lethal, no.

Hulk Smash!

[tedward]

Righto Mr Rodin. When Mr Armstrong stepped out, what dosage did he get?

[rodin]

Sept 10, 2010 8:20:39 GMT -4 @capricorn1 said:

Sept 10, 2010 7:19:01 GMT -4 rodin said:

www.newworldencyclopedia.org/entry/Gamma_ray

So if we could shield out all other radiation we could survive for days standing on a Sunspot and suffer no long term ill effects?

That's a bit coincidental.....I was reading about this only a few days ago...
www.lpi.usra.edu/lunar/missions/apollo/apollo_15/experiments/gamma_ray/

Rodin, the Sun emits enormous gamma rays, far more than the Moon. They get absorbed by the compressed plasma as they are emitted.
www.mit.edu/~goodmanj/madsci/878483565.Ph.r.html

Hope that helps.....the Moon isn't dangerous as regards gamma rays. No air and occasional solar flares, the odd micro-meteorite maybe.

I looked to quantify the radiation but initial searches did not offer this info.

As regards the fact space also shows some CMB-type residual gamma radiation fair enough. But the Moon is showing as a bright source. Inverse square law yourself all the way to the surface and the radiation could be significant

Interesting about the Sun absorbing its own gamma radiation

[rodin]

Sept 10, 2010 8:30:15 GMT -4 Cavorite said:

Well, the atmosphere counts for something. Life on the ISS would be a bit more exciting, though.

What about the Van Allen belts also?

[Bob B.]

Sept 10, 2010 9:24:33 GMT -4 rodin said:

Sept 10, 2010 8:30:15 GMT -4 Cavorite said:

Well, the atmosphere counts for something. Life on the ISS would be a bit more exciting, though.

What about the Van Allen belts also?

What point are you trying to make and the VARB?