Its surface temperature is in the region of 5,500C, rising to a whopping 15,000,000C at the centre.This is where hydrogen, which makes up 75 per cent of the suna€™s mass, is fused into helium at the rate of half a million tons every second.
When its hydrogen reserves run out, it will expand into a red giant star and could engulf the Earth.At this point it will just be burning helium. The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline. Ok so we’ve tackled the sun issue, and figured out that extremes are rarely, if ever good and that there’s a time for sunscreen, and a time for sun. Well then consider the fact that with every application of sunscreen, we’re smearing our bodies with chemicals that we as the public, know little about. 100,000 times smaller that the diameter of a human hair, nanoparticles are a great feat of engineering. So maybe you’re like me, and you’re wondering how the FDA could still allow these chemicals to be used in sunscreen.
Here’s another bit of interesting information from Michael Hansen, a senior scientist for Consumers Union. There is clearly a danger from chemicals in many sunscreen products, and the lack of FDA regulation means that the labels on these products may not even identify that these chemicals are present.
I know this is a bit much, and it’s quite a bit longer than I usually write, but I think it’s that important.
If you’re as tired of all of this as I am, you’re at the point right now where you’re wondering what to do about all of this. This one was taken at sunset, I was inspired to take it because of a thread on ATS where a member said they don't see red sunsets anymore. I am going down to the coast this weekend and will take my camera with me so that I can add more pictures. I'm not an astronomer or astrophysicist but, that said, I have to ask question the relevance of this "experiment"?
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Solar flares are giant explosions on the sun that send energy, light and high speed particles into space. The biggest flares are known as "X-class flares" based on a classification system that divides solar flares according to their strength. The biggest X-class flares are by far the largest explosions in the solar system and are awesome to watch. If they're directed at Earth, such flares and associated CMEs can create long lasting radiation storms that can harm satellites, communications systems, and even ground-based technologies and power grids. NASA and NOAA a€“ as well as the US Air Force Weather Agency (AFWA) and others -- keep a constant watch on the sun to monitor for X-class flares and their associated magnetic storms.


Ita€™s a lot, but therea€™s enough hydrogen to keep the sun burning for around 5,000 million years. When that, too, runs out, the sun will collapse into a white dwarf the size of the Earth, made of carbon and oxygen.It will take billions of years to cool down to the background temperature of the Universe. Well not being a doctor, my best guess would be that better advice would come from finding some place in between the two extremes of all out intentional tanning, and ‘Casper the friendly ghost’ sun phobia.
The FDA for example, studied a chemical found in many sunscreen brands (go check yours, now) called retinyl palmitate, which is a vitamin A derivative. Several studies have found that these particles are so small that they have no problem penetrating skin and directly entering your blood and urine.
Consumers Union (which publishes Consumer Reports) has said that its tests of sunscreen products showed 80 percent of tested sunscreen products that claimed not to contain nanoparticles, actually did. My advice is not medical advice; it’s just my opinion based on common sense as I interpret it.
The opinions of our members are not those of site ownership who maintains strict editorial agnosticism and simply provides a collaborative venue for free expression. These flares are often associated with solar magnetic storms known as coronal mass ejections (CMEs).
M-class flares can cause brief radio blackouts at the poles and minor radiation storms that might endanger astronauts. Although X is the last letter, there are flares more than 10 times the power of an X1, so X-class flares can go higher than 9. Loops tens of times the size of Earth leap up off the sun's surface when the sun's magnetic fields cross over each other and reconnect.
X-class flares on December 5 and December 6, 2006, for example, triggered a CME that interfered with GPS signals being sent to ground-based receivers.
With advance warning many satellites and spacecraft can be protected from the worst effects. Intentional tanning (which we’ll call ‘overexposure’) is definitely popular, especially among today’s youth, and most specifically among young women. Always talk to your doctor about your risks and if your doctor has advised you to do something, or to not do something for a specific reason, talk to them before you do otherwise.
The number of solar flares increases approximately every 11 years, and the sun is currently moving towards another solar maximum, likely in 2013. Similar to the Richter scale for earthquakes, each letter represents a 10-fold increase in energy output.
The most powerful flare measured with modern methods was in 2003, during the last solar maximum, and it was so powerful that it overloaded the sensors measuring it. In the biggest events, this reconnection process can produce as much energy as a billion hydrogen bombs.


The purpose of them being ‘nano sized’ is to allow the sunscreen to rub in clear on your skin instead of white. Not only does this show something that we already knew, that many businesses (as well as packaging labels) can’t be trusted, but it also shows that through lack of swift action it’s becoming increasingly harder for us to rely on the FDA to protect us. A machine that in a matter of minutes can pump the same amount of ultraviolet light onto your skin that would normally take the sun hours to do is an obvious risk.
That means more flares will be coming, some small and some big enough to send their radiation all the way to Earth. More often if you’re actually outside.  Far be it from me to speak up here, since I’m not a doctor, but isn’t that a classic example of ‘one extreme to the other’?
To make a long study short, they found that this chemical found in many sunscreens not only did not in any way prevent skin cancer, it increased the speed and growth of cancer. Drinking too much water poses a serious risk to your body, but does that mean you shouldn’t drink any water?
Underexposure gives richer colors.If using flash to light up your subject, set the exposure for the sun and sky.Keep shooting! Also keep up to date with Consumer Reports to find products that live up to their claims, and their labels claims. Our bodies produce all of the natural vitamin D we need directly from sunlight interacting with our skin.  So to cover up completely, wear sunscreen everyday, reapply 6 or more times per day, and continue this behavior even through the winter seems for lack of a better word, stupid. And nanoparticles can cross into human placentas from mothers causing damage to unborn children. We’ve been living in the sun as long as humans have walked the Earth, and to make a claim that we should shade ourselves from it sunrise to sunset is absolutely ridiculous. Keep in mind that these studies are peer reviewed and are publiched in scientific journals. Crooked horizons wreck a good shot.Use a flash if you want to take portraits with the sun in the background.
This is best done during twilight to catch the details in the surroundings, and balancing out the flash. Sometimes the best picture is behind you, lit by the golden color of the sunrise or sunset.Plan Ahead!Know when the sun rises and sets where you want to shoot the picture.



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Comments to «Taking pictures of sun eclipse»

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