What is the visible surface of the Sun called?
chromosphere
corona
stratosphere
photosphere
The photosphere is a layer below which the Sun becomes opaque to visible light. It is tens to hundreds of kilometers thick, and is slightly less opaque than air on Earth. Because the upper part of the photosphere is cooler than the lower part, an image of the Sun appears brighter in the center than on the edge or limb of the solar disk, in a phenomenon known as limb darkening.
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Answers by country
chromosphere
corona
stratosphere
photosphere
answers
Lebanon
14
India
256
Canada
15
France
11
Republic of Ireland
12
Pakistan
12
Germany
360
Austria
51
Poland
5040
the United States
163
Australia
35
the United Kingdom
80
Switzerland
33
the Philippines
23
Spain
10
Greece
14