okay now we just have two more layers of the Sun to do and then there's one little thing I want to talk about after that so let's finish this up there's a problem with seeing the other two layers of the Sun though can anybody figure out why it is hard to see the layers of the Sun that are above the photosphere why is it so hard to see them it's a pretty simple reason don't overthink it I like how you guys are thinking but you're it so the layers above the photosphere do emit visible and UV light and all the kinds of light that we're talking about it's just that they don't emit nearly as much as the photosphere so the photosphere is just so bright that our eyes can adjust to see the other parts of the Sun we even have a hard time picking it up on telescopes a lot of the times so in order to see the rest of the Sun you need to block out the photosphere okay and that naturally happens sometimes what we call it when the photosphere is naturally blocked on the Sun yeah it's called an eclipse so one of the very few times you can see the layers of the Sun that are above the photosphere is during an eclipse but we can artificially fake an eclipse inside of a telescope by blocking out just the photosphere from our images and if we do we get images that look like this oh forgot to switch it over let me switch back into my powerpoint there we go here is an image of the Sun with the photosphere blocked out okay and you can see here that there's sort of a bunch of darker looking patches here that's because those parts have been blocked that's photosphere peeking through so this is the next layer of the Sun and you can kind of see up here you know how little kids draw the Sun and they draw that fire around it that's kind of a representation of this if we were to zoom in real close on this this part of the Sun looks like fire okay so when we draw it in our diagram let's draw it looking kind of like fire here we go so the next layer of the sun's gonna look like this and it's called the chromosphere and the reason it's called the chromosphere is that it is a lot of people considered it to be very colorful chromo means color it's much thinner than the photosphere and if you were to take a guess would you expect the chromosphere to be hotter or colder than the than though photosphere will we expect the chromosphere to be hotter or colder than the photosphere if you were to guess yeah you've guessed colder but this would be one of the times where our guess would be wrong because it turns out that the photosphere is actually the coldest part of the Sun the temperature down in the core is in the millions of Kelvin it drops down to about 5,800 when you get to the photosphere so still hot enough to kill you instantly but when you jump to the chromosphere it goes to 25,000 so photosphere is about 5,800 the chromosphere is 25,000 kelvin so it's hotter than the area just below it and the reason for that is because of how its composed how it's made let me again go back to this picture here we go um if you look right here this is a zoomed in picture of this and if we look right here again see how it kind of looks like a fire right here the chromis fear is made of hot jets of gas called spicules and that spelled SP I see you l spicule SP IC u l spicules and again they're hot jets of gas bursting through the photosphere from below the photosphere so the reason that this chromis fear is hotter than the photosphere is that the gas that makes up the chromis fear is bursting through the photosphere from below so it comes from a hotter region of the Sun so it stays hotter as it shoots out through the through the photosphere does that make sense okay now in order to see the very last layer of the Sun you have to block out the chromosphere and if you do you get a picture of the Sun that looks like this so all of this everything that they're coloring red or orange or yellow here all the way out to here is the last layer of the Sun and unfortunately for these times uh-oh qward time now a little bit awkward does anybody know what this layer of the Sun is called the last layer of the Sun yeah yeah it's called the corona it's called the corona spell just the same as the corona corona virus so what can you do but it's named the corona for the same reason that the corona virus is called corona yes the Sun has Corona why why do we call this the corona why is the why is the corona virus called a Corona and why is this this thing called a Corona yeah yeah Korona means crown so you can think of it is like around the sons head is this jagged area kind of like a crown and if you ever look at a picture of the coronavirus it also has like a jagged area around it that's why it's called a corona virus it looks like it has a crown right so that's where that name comes from so let's draw this on to our picture this is a very big uh excuse me layer of the Sun it's the last one for our diagram it's very big and very misshapen it does not keep one shape to it so I'm just gonna kind of draw a big lumpy mess here it doesn't keep one size and it doesn't keep one shape it continuously changes in size and shape between twice as big as the Sun out to three times as wide as the rest of the Sun it's it's a mess right and then up here in our diagram this is just outer space and I'll also take a picture of this diagram and post it up in the discord in case you can't see the writing very well on the stream okay now what is the corona like the corona is the thinnest layer of the Sun by far it's extremely thin if you were floating around in it you probably wouldn't even see it that's how thin it is but it is also even hotter than the chromis fear okay it is about two million Kelvin okay so let's let's figure this out let's look this lets look at this check this out if we look at all the layers the core is the absolute densest as you go up everything is less and less and less and less dense that makes sense but for temperature the core is the hottest and then the temperature drops until you get to the photosphere and then it gets hotter and hotter now why is the corona so hot we don't fully understand why the corona is so hot okay it is not well understood we're still trying to figure that one out it seems hotter than then it then it should be based on a lot of our models but we're working on it I'm sure we'll figure it out without you know it's not gonna be something that it takes us hundreds of years to figure out we'll figure that out now two million Kelvin if you could somehow block out the entire Sun except for the corona like we just took the corona and put it somewhere else at to two million Kelvin and kept it two million Kelvin and you went in it you would die right you would die why would you die being in the corona why would you die being in the corona even if the rest of the Sun wasn't even there assuming and let's assume you have air to breathe the corona is very hot the next thing I'm gonna say is not gonna make a lot of sense at first if you were to go into the corona by itself you would freeze to death and let that sink in for a second it's 2 million Kelvin if you went into the corona all by itself you would freeze to death let's figure that out okay let's figure that out to help you figure out what's going on uh let's i think somebody actually has figured it out but let's let me give you guys a different situation let's say that you were in your kitchen and a crazy person broke in you were like you were like cooking something in the oven and you are boiling some water for some pasta and a crazy person put came in and said you have to stick your hand into you have two choices stick your hand into the oven for five seconds or stick your hand into the boiling pot of water for five seconds okay which one are you gonna put your hand in would you rather put your hand into the oven for five seconds or put it into the boiling pot of water for five seconds hopefully you guys are saying the oven looks like you're saying the oven and the reason for that is this it's not necessarily because the oven would be a lower temperature in fact your hand would be fine in the oven even if the oven was a higher temperature than the boiling pot of water if you spend the same amount of time in them why would the boiling pot of water be able to heat your hand up let's put it this way more efficiently why would the boiling pot of water be worse it's the density that's correct it's the density the density is what's happening so when something heats you up it has to touch you to give its heat to you okay when you stick your hand in a boiling pot of water you're going to be hit by billions and billions of hot particles per second when you stick your hand in the oven because the air is not as dense as the water even if the air was hotter you're gonna get hit far less often and so your hand does not heat up as fast