Mysteries of the Sun

[Shrek]

Fair enough, but my point was that a lot of (most of) the hydrogen does not get burned in a Sun sized star; dwarf stars are another story although the Universe is not old enough for them to have run out of fuel yet.

Hydrogen floats, so one needs convection to pull it down.

 

[lexluthermiester]

Fair enough, but my point was that a lot of (most of) the hydrogen does not get burned in a Sun sized star

That is part of what is still being(hotly) debated. The reality is, no one actually knows. We don't have models refined enough to accurately predict what percentage of hydrogen will be left over from our Sun. Computer simulations suggest the ratio of unfused fuel will be low, but those problems and equations are still being worked and explored.

Hydrogen floats, so one needs convection to pull it down.

While correct, please keep in mind that plamatic hydrogen under high compression behaves like a fluidic metal that has a greater density than helium and plamatic helium and thus helium rises and metallic hydrogen descends.

 

[Shrek]

Then we can cheat! ;-)

Look at the population of Sun mass stars as there has been enough time in the Universe for such stars to have gone through their full life cycle.

While correct, please keep in mind that plamatic hydrogen under high compression behaves like a fluidic metal that has a greater density than helium and plamatic helium and thus helium raises and metallic hydrogen descends.

You clearly know more than myself so I defer; didn't know plasmatic hydrogen was denser than plasmatic helium outside the core.

 

[Bones]

Here ya go - A recent infrared photo of the sun that's unusual yet cool at the same time.
Yes - It's the real deal.


Here's a link to an article about it:

NASA captures photo of 'smiling' sun. It's not as cute as it looks. - The Washington Post

 

[qubit]

@Bones You know what I don't get? Why do nearly all pictures show the sun as orange, like this false colour one, or yellow, when the sun actually looks white with a hint of yellow?

If you know the answer I'd love to know.

 

[lexluthermiester]

If you know the answer I'd love to know.

False colour spectrum photos can be made any colour, but some hues have better contrast than others and red/orange have better contrast for some purposes.

 

[Bones]

@Bones You know what I don't get? Why do nearly all pictures show the sun as orange, like this false colour one, or yellow, when the sun actually looks white with a hint of yellow?

If you know the answer I'd love to know.

I believe Lex nailed it - you almost always see it in the spectrum of colors used here and it's probrably the best out of all to see it.
Sometimes it's shown in a more reddish color but this is what's most commonly seen that I know of.

 

[Wirko]

@Bones You know what I don't get? Why do nearly all pictures show the sun as orange, like this false colour one, or yellow, when the sun actually looks white with a hint of yellow?

If you know the answer I'd love to know.

It's not just false colour photographs. Wherever the sun appears in an illustration or a drawing, or as a symbol, it's almost always yellow or orange. In the Japanese flag it's red.

Explanation 1. I look at the sun and it looks yellow or pinkish orange or red or dark red. Well, that's when I actually can look into the sun at least for a split second, which means when it's low on the horizon.
Explanation 2. Even at noon, the sun is white on blue sky background, which possibly makes it appear yellow or orange. Like those grey strawberries.

 

[lexluthermiester]

It's not just false colour photographs. Wherever the sun appears in an illustration or a drawing, or as a symbol, it's almost always yellow or orange. In the Japanese flag it's red.

Explanation 1. I look at the sun and it looks yellow or pinkish orange or red or dark red. Well, that's when I actually can look into the sun at least for a split second, which means when it's low on the horizon.
Explanation 2. Even at noon, the sun is white on blue sky background, which possibly makes it appear yellow or orange. Like those grey strawberries.

You seem to be missing the point of the photo's. They're not taken in visible light. They're in XRays and high frequency UV.

 

[Steevo]

Plus some radiance cause its really hot too.

 

[xtreemchaos]

sun actually looks white with a hint of yellow?

your quite right but this is what sol looks like through my solar scope and cam, its as near as one can get from earth but dimmed by a quark HA filter to show detail.
and this is the setup used to take said pics just incase anyones wondering.

 

[qubit]

@xtreemchaos Nah, ya didn't take those pictures, as good as they look. See, the brain dead conspiracy theorist in me demands to know where the stars are in the blackness of space. I win!

 

[xtreemchaos]

stars are in the blackness of space.

orrh you got me next time ill photoshop them in . heres my flicker page charl chaos | Flickr and here Solar Imaging Showcase 2017 - Imaging - Solar - Stargazers Lounge and compaire with some of my solar imaging buddys and just in case ya want to see some more of my solar system work without stars in the background .

 

[lexluthermiester]

your quite right but this is what sol looks like through my solar scope and cam, its as near as one can get from earth but dimmed by a quark HA filter to show detail.
View attachment 268037View attachment 268039View attachment 268040View attachment 268041 and this is the setup used to take said pics just incase anyones wondering.

Nice setup! And your photo's are a perfect example of the kind of actual imagery that is being done. They are then given false color to highlight various details in the images.

 

[xtreemchaos]

thanks bud, yes i dont like false colour at all mate, i do capture with a colour cam but in processing remove all colour before staxing the frames, the Quark HA filter makes a red image but its nice for visual its too over powering in a image, but for proms i sometimes add a bit of colour just to make the proms stand out if thay are very faint. i havnt done much imaging this year with my health being up and down but hoping to get some done soon "fingers crossed". charl.

 

[Space Lynx]

Sorry if this has already been asked, my head hurts and I am quite tired. I was just thinking tonight, as the sun gets bigger, would it be possible to move to Mars gradually over the next 500k years, and then on that same note, from Mars to the moon Titan? Or when the sun expands, does it happen so fast, that such a gradual move over the eons won't be possible? It seems to me that Titan, once Earth is absorbed by the sun, may be perfect conditions under the new dimmer sun for another few billion years?

 

[lexluthermiester]

I was just thinking tonight, as the sun gets bigger

The Sun isn't getting bigger. It is getting smaller over time as it looses mass due to emissions and CME's.

Or when the sun expands, does it happen so fast, that such a gradual move over the eons won't be possible?

You're talking about the end of the fusion phase of the Sun when it expands into a red giant.

 

[xtreemchaos]

I'm going to be honest here, by the time sol expands we humans will have long gone, most likely most if not all life on earth will not exist "think Venus", we are taking 4 billion years. as for moving to mars we have great difficulty living at extremes on our own planet we are not going to live on Mars Longterm its far too hostile for life no matter what Elon says yes, we will visit people will die and that will be the end of that. sorry to be neg believe it or not i am a optimist.

 

[Space Lynx]

I'm going to be honest here, by the time sol expands we humans will have long gone, most likely most if not all life on earth will not exist "think Venus", we are taking 4 billion years. as for moving to mars we have great difficulty living at extremes on our own planet we are not going to live on Mars Longterm its far too hostile for life no matter what Elon says yes, we will visit people will die and that will be the end of that. sorry to be neg believe it or not i am a optimist.

humans or no humans, you can not deny that evidence of life has existed for over a billion years on our planet, 2.5 billion if i remember correctly. therefore, logic dictates even if we aren't around then, something will be, therefore, making the thought process still a valid contemplation

 

[xtreemchaos]

good thinking but there's never been a species like human's hell bent on destroying them self's and everything around them before. im glad im a cat .

 

[Space Lynx]

good thinking but there's never been a species like human's hell bent on destroying them self's and everything around them before. im glad im a cat .

humans aren't that powerful, I do believe Earth would heal and many species would survive even a nuclear winter. it would take several hundred years, perhaps even a few tens of thousands, but other species would begin to develop consciousness at some point. that is the beauty of the Cosmos, and of the Earth, it will be here long after us, as it was long before us.

 

[xtreemchaos]

I'm talking about something much worse than a nuke winter the runaway greenhouse effect which some scientists are saying may have already started.

 

[qubit]

good thinking but there's never been a species like human's hell bent on destroying them self's and everything around them before. im glad im a cat .

Catz rulez.

 

[xtreemchaos]

bud, ive told him to stop going on the interweb but he don't take any notice, ill have to restrict his dreames .

 

[Space Lynx]

I still don't fully understand the concept of the suns energy still.

So let's fast forward, a suns energy, emitting rays of light, does it just fade into nothing or does it always exist? So if I use the classical example of if I had A telescope big enough and hyptothetically could travel infinite space, I could always find the rays of light the sun emitted at some point? So does therefore everything everywhere is already eternal in nature? Some energy and light is always lost though? But is that energy lost forever? Or does it just float around in outer space for all eternity?

I don't know how to word what I am trying to ask. I think I may have just confused myself, so yes, nevermind I suppose.

edit: a flashlight can only emit so far, so the suns rays only go so far in billion trillion lightyears too... then it fades, but where does that energy go? is some of it lost? what happens to a light from a flashlight? does the light particles just fade into nothing? or are they still something? this is probably very basic to most people, I just don't get it.