How many sunspots are visible at the current time?

I think about 20 small ones and about 5-10 main ones. You can see for yourself by looking at the SOHO images for today. Go over to http://sohowww.nascom.nasa.gov and click on "Latest Images".

Click on today's date under "SOHO Summary data" and then find an "MDI Intensitygram". That's a fancy name for a picture of the Sun taken in ordinary white visible light. You can see the larger sunspots for yourself (there are sometimes some tiny ones that are hard to see...) Dr. Craig DeForest TELESCOPES (GROUND BASED) QUESTION: If one of the mirrors is smudged or cracked will it mess up the image that you are receiving?

ANSWER: You betcha! If it's just smudged, you'd get a lot of scattered light--as though you were wearing dirty glasses--and if it were broken it would be like looking through a couple of different telescopes at the same time. We take a LOT of care with the mirrors, and recoat them every couple of years.

QUESTION: Do you need to replace parts such as mirrors often or once in a ... more.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.