Make a new document, 1000x1000 pixels, black background.



Now add a mud texture in your document, like mine or close.



Hit CTRL+I (Command+I on Macintosh) to inverse the colors. You'll see later that this will add more realism to the effect.



Using the elliptical marquee tool, draw a perfect circular selection, Inverse selection and delete the unwanted texture. Your image should look like the example below:



Go to Filter>Distort>Spherize and choose a value of 100%. Go again and reapply the filter, but this time with a value of 50%. Your image should turn into this:





Go to layer>flatten image. Now you should have only one layer. Deselect and go to Filter->Distort->Polar Coordinates. Options: Polar to Rectangular. Your image should look like this:





Image->Rotate Canvas->90CW. Apply: Filter->Stylize->Wind Method: Wind. Direction: From the right. Hit CTRL+F to reapply.







Go to: Image->Rotate Canvas->90CCW. Finally, apply Filter->Distort->Polar Coordinates. Options: Rectangular to Polar.





There you go, now all you do is just play around with colors, by either using Image>Hue and Saturation, or Image> Color Balance. I use color balance in the image below.

Creating a Planet Explosion Tutorial: Final Result

Hey devilz-fury here is what mine turned out like.

Hey thats pretty good for a first go... i only wish i had photoshop... cause i know heaps about it and how to use it and stuff... it's just i aint got it.. lol