Added: Oct 4, 2006
From: BrunoTheQuestionable
Duration: 3:56
SOHO observations of the Sun's outer atmosphere (FeXII at 19.5nm)The level of solar activity goes through a cycle of maxima and minima with one cycle lasting roughly 11 years. In 1996 the Sun was around minimum, and in 2000 it reached maximum. In 2007 the Sun is again around minimum at the end of the cycle (no. 23).The level of solar activity is matched by the number of sunspots on the Sun's surface. Sunspots are regions with an increased density of magnetic field lines that pass through the Sun's surface. Inside these regions, the surface is some 2000 degrees cooler than normal and therefore appears dark (in visible light), creating the distinctive appearance of sunspots.Usually sunspots occur in pairs, with two sunspots of opposite sign as defined by the direction of the local magnetic field: N (outward magnetic field) and S (inward magnetic field). The relative position of the N (north) and S (south) sunspot is dependant on the pair's location on the Sun's surface and also changes with each solar cycle. During cycle 23, on the Sun's northern hemisphere the orientation of all sunspot pairs is to have as leading and trailing spot the N and S spot, respectively, with respect to the Sun's rotation. On the southern hemisphere the orientation is reversed with the S spot leading and the N spot trailing. With the next solar cycle this orientation is flipped in both hemispheres, as the Sun's global magnetic field reverses its orientation. As a new cycle begins, the number of sunspots with the reverse orientation will increase and the ones with the orientation of the old cycle will decrease in number. In the transition period they can both occur on the Sun, as the two cycles have no sharp boundary and overlap.SOHO constantly monitors the Sun and will continue to observe the evolution of the sunspots and the solar activity during the new solar cycle, which will culminate in the solar maximum in about 5.5 years time. Solar scientists predict that the upcoming solar maximum will be very active and could even be the most fierce in decades.
Channel: Tech
Tags: 19.5nm astronomy fexii soho sun
Rating: 4.80 (717 ratings) Views: 338851' favoriteCount='1315 Comments: 931
KJT922010T Says:
Dec 21, 2008 - its getting older every day its in its middle stage theres 2 more stages and then its done
calleford Says:
Dec 21, 2008 - Just shut the fuck up and get the fuck out.
Love9sick Says:
Dec 22, 2008 - I prefer to keep religion separate from my brain. I rather stay sane and intelligent.
Ormaaj Says:
Dec 22, 2008 - Beautiful images. Thank you.
nutier Says:
Dec 22, 2008 - great video from our Sun! The sun is burning brightly than the past . We will be so hot in the future.nutier
steve123456789010 Says:
Dec 22, 2008 - now what are those two stages kjt? (i know one of them is when it runs out of gas but whats the other)
haggardhitch1 Says:
Dec 23, 2008 - Obviously its disbelief. Thats the whole point. God is something you CHOOSE to believe. Its a concept. Albeit, archaic and fruitless. Believe what you want fella, the rest of will keep thinking for ourselves
paperluigi64 Says:
Dec 25, 2008 - THANK YOU!
JpSoundz Says:
Dec 26, 2008 - Does anyone know the tittle of the song?euharisto
wildnites558 Says:
Dec 27, 2008 - "...archaic and fruitless...."That's your opinion (and by the way, highly judgemental)....and you're certainly entitled to you're opinions --- but I'm entitled to mine too. That's what I think.
Jaydog523 Says:
Dec 27, 2008 - "Maybe You're My Puppet" - Cliff MartinezIt's from the Solaris soundtrack.
haggardhitch1 Says:
Dec 27, 2008 - Why so defensive? You came on pretty strong calling all us free thinkers ignorant unbelievers. Take another look in that book of yours about being "judgmental" Sinner
Torquemada85238 Says:
Dec 29, 2008 - Brighter doesn't necessarily mean hotter. It's blowing off energy and matter in a different way, and if it doesn't fly in our direction, then the change could be exactly the opposite. The energy being put out is the same relatively, but instead of even output, it's spotting. It could explain the winter we're having in the Northern Hemisphere. Global warming and cooling cannot ignore the impact of changes in the sun's dynamic output.
quelindaes Says:
Dec 31, 2008 - wow that's very impressive!
jumanjibill Says:
Jan 3, 2009 - chick chik chik chik chicken i want 1 for my tea i havent had an egg since easter and now its half past 3 so chick chick chick chicken lay a lil egg for me
waswereisarewill Says:
Jan 5, 2009 - God, I love that album. So appropriate.
goranca Says:
Jan 5, 2009 - oh da i was on that fireplace,last monday..
krag3r Says:
Jan 5, 2009 - Fake. The sun isn't green.
PocketHercules99 Says:
Jan 6, 2009 - so whats this telling us ?is our sun healthy? One thing that i find annoying is our beliefs that we can make great changes to save our planet .... if something is going down its going down
BuzyBat Says:
Jan 6, 2009 - It's telling us almost nothing. The solar activity has a cycle every 11 year ,so this is very normal.Exept there has been a little more activity lately (last 50 years or so).
jljs15 Says:
Jan 6, 2009 - uhauahauhauha The sun isn't green... i got to be kiding
bakerpd4 Says:
Jan 7, 2009 - its funny how people say fake...no fucking shit fucking ignorant morons
pantelisOeO Says:
Jan 7, 2009 - ehm...maybe its green to avoid the light...how close minded can people get sometimes....
Metube2x Says:
Jan 7, 2009 - The ppl can be such a morons! I bet krg3r doesn't finished high school !Total degradation !!!
TheIbanezGuy Says:
Dec 20, 2008 - lol i challenge you to write any proof that links faith/religion to science. after that, go back and try to deliberate which faith/religion is most suitable in your explanation, and try to open your mind to other possibilities, because the god answer is the first and easiest one we can think of.