Question

what we called to the outermost layer of the sun ???​

Answer 1

Answer:

The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.

hope it helps.

Answer 2

Answer:

The outermost layer of the sun is called photosphere.