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  what do sunspots look like?
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  how big are sunspots?
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  cycling sunspots
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  can sunspots harm us?

how big are sunspots?

 

Sunspots come in all different sizes. The largest can be 30,000 km across - you could put two Earths in a spot that big and still have enough room for the Moon as well!

 


Never look at the Sun directly -  Never look at the Sun through a camera, binoculars or a telescope either. You could really damage your eyes.

 

Sunspots are normally HUGE.

 

This picture shows a medium size sunspot,

which is roughly the size of the Earth.

 

Sunspots Earth

Sunspot

Sometimes sunspots are big enough to be seen without a telescope. These are the only spots that were recorded in ancient times.

 

To be seen in this way a spot would have to be larger than about 50,000 km in diameter (4 times the size of the Earth).

 

Most so-called naked eye sunspots are actually groups of spots that just look like one large spot - like the group in this picture taken by Paul Brierley

     

Here is a huge sunspot group observed with the GREGOR solar telescope in the Canary Islands of Tenerife.

  What is the advantage of observing the Sun from the ground
Sunspot group observed with the GREGOR solar telescope in the Canary Islands of Tenerife  
   

 

   
 
 

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