How to make Fire Planet [4/5]

We need to add atmosphere now. So we do the right button over the selection and we choose Select Inverse, then: Filters-> Blur-> Radial Blur and we push Ctrl+F repeatedly until we like what we got (in my case I repeated the filter twice, depending on how bright our atmosphere should be):

6. Since we already have made the Planet's lay, we have the colouring to do. We use orange to yellow gradient. When we make a gradient we like, we change the gradient's rate to Colour Burn - from the falling menu into the instrument's options and make it as we want. We have to remove the selection, so we can colour the whole image.