What is the importance of Black Spots of the Sun?

Answer 1

Black spots, or sunspots, are among the most interesting and amazing phenomena observed on the Sun. Sunspots come in all sizes. Some of them are very big, about the size of Earth, and others are much smaller. They all look small to us, because the Sun is far away from our planet. The spots look like craters: they are darker in the center and have a lighter rim around them. Scientists now understand that the spots look black because they are cooler than the rest of the surface of the Sun.

The formation of sunspots has to do with the magnetic field of the Sun. All planets and stars have a magnetic field. The Earth has a magnetic field which moves a compass arrow so that it always points to the North. The Sun's magnetic field is not that simple: it is very strong in some regions, and much weaker in other regions. In some regions it is a thousand times larger than the Earth's magnetic field. These regions of strong magnetic fields are where we find sunspots! Moreover, the spots often come in pairs. These pairs act like a bar magnet: one of spots corresponds to the North Pole and other to the South Pole of the bar. Walking with a compass on the Sun would be confusing; the compass would always show the direction to a nearby sunspot. Since most of the spots are located right above and below the Sun’s equator, a compass arrow would usually point East or West. However, the compass would point in different directions in different regions of the Sun.

Why are spots cooler in the region of the strongest magnetic field? This is because the upper layers of the Sun are in constant motion, like bees in a hive. This motion helps bring heat from inner regions up to the surface and makes the surface hot. But a strong magnetic field slows down this motion and prevents heat from moving up to the surface. The lowest temperature in the sunspots is about 3,700 Kelvin, which is about 6,200 degrees Fahrenheit. This temperature may seem very high, but it is much lower than the temperature of the rest of the solar surface, which is 5,700 Kelvin, or more than 9,800 degrees Fahrenheit. Thus, the spots look black in comparison with the nearby hotter regions of the Sun.

It is amazing how much people have come to understand about sunspots and other events on the Sun. You can observe sunspots using ordinary binoculars or a small telescope, but NEVER look through them with your eyes. The Sun is very bright and will hurt your eyes. However, you can project the image of the Sun on a piece of paper, and then you will see the spots on the paper!

Answer 2

Ok, what the spots are we know now. Thanks to the others.
But what is the importance of them?
I do not know how or why they influence what the do but they are paired with periods of extensive sun activity. So when there are more spots the sun flares increase (or vice versa) and the sun's wind is stronger and radiation from the sun has its peak. The sun spots follow a cycle with a approximal 11yr length. So very 11 years the sun's impact on earth and the other planets is highest

Answer 3

A sunspot is a region on the Sun's surface (photosphere) that is marked by a lower temperature than its surroundings and intense magnetic activity, which inhibits convection, forming areas of low surface temperature. Although they are blindingly bright at temperatures of roughly 4000-4500 K, the contrast with the surrounding material at some 5700 K leaves them clearly visible as dark spots. If they were isolated from the surrounding photosphere they would be brighter than an electric arc. As of 2006, we are near the minimum (predicted for 2007) in the sunspot cycle .

Similar phenomena observed on stars other than the Sun are commonly called starspots.

Answer 4

black spots otherwise called sunspots were discovered by Galileo.they really dont have any importance..they are formed when an area of the sun is not as hot as the remaining area and become a dull blackish brown.(DONT EVER TRY TO SEARCH FOR SUNSPOTS ON THE SUN UNLESS YOU HAVE A SPECIAL SUN-LENS OR ELSE YOU MAY WELL SAY GOODBYE TO YOUR EYES!)

Answer 5

The magnetic field of the Sun determines how its radiation is radiated. Some of that radiation we like cause it helps us see and call it the "visible" spectrum. however, being a really really really big giant humongous nuclear fusion reactor [think big and the Sun is bigger than that], the Sun also radiates other forms of electromagnetic radiation such as UV rays, X-rays, gamma rays/particles. These aren't quite so nice for us humans--or other life forms on Earth. So, our Earth has its own magnetic field generated by its iron core. The Sun spots are result of convergence of the Sun's magnetic field's lines of force. These force lines direct at times huge emissions of charged particles/rays of the aforementioned harmful types towards us. Now, if these weren't deflected by our magnetic field, we'd fry. Our satellites are above the stronger parts of our magnetic field. The bursts of solar radiation can fry the circuits of satellites. If a solar flare is predicted, satellites are maneuvered to avoid possible permanent damage. The companies that own these satellites feels a slight disruption in things like their customers' cell phone service, etc is more acceptable than the complete loss of the satellite.
So, it is a good idea to keep watch for sun spots and the potential of the resulting solar flares.

Answer 6

that's lens flare and it is not brought about by using having your digital camera promptly in step with the solar... in case you the place perpendicular and parallel to the solar, there may be none different than that brought about by using imperfections on the lens, dirt or different debris. the incontrovertible fact that your lens has greater advantageous than one floor (each and every lens factor has 2, front and back and you will't purchase one with under 4), the incontrovertible fact which you angled your digital camera fairly resulted in this clearly going on phenomena. it is not a stable theory to leaf by using a lens on the solar. The everlasting harm that can create is irreparable yet i may be stupid to declare to you that i've got in no way finished it. How else might you compose the shot, top? do no longer look on the solar (exceptionally by using magnified/zoom lenses). My public provider fact is complete... back to certainty. A ND filter out does not decrease glare even though it does decrease harm on your retina. On a unfavourable word, it additionally degrades the image fairly, provides 2 greater surfaces of bewilderment and contributes to greater components of flare. answer?... there is not any longer one wanting being relatively experienced at placed up production enhancing or making a appropriate composition then cropping for effect (all this is in photographs one 0 one). :-) .

Answer 7

They demonstrate the presence of magnetic field lines emerging from the sun, which play a significant role in solar prominences and flares. They help astrophysicists understand the structure of the sun, and how it works, as well us help predict solar flare maximums.

Answer 8

They are the cooler parts of the sun

Answer 9

if we go logically...with no technical or scientific meaning then...black spots are suggesting the danger of the increasing pollution on earth..which might cause global warming which would result in ending up of our lives..........