1. Open a new Image 200x200px. Make a new layer and fill it with black
2. Now go to filter>>render>>lens flare. Choose 105mm Prime and brightness set to 100%
4. Go to filter>>distort>>polar coordiantes and choose "Polar To Rectangular"
5. Go to image>>rotate canvas>>flip canvas vertical
6. Go to filter>>distort>>polar coordiantes and choose "Rectangular To Polar" this time.
You can see now a kind of orb already
7. Select the "Elleptical Marquee Tool" hold shift and select the inside of your orb and cut it by pressing ctrl+X
8. Open a new Image 200x200px and paste the orb (ctrl+V)
9. Now press ctrl+u and select colorize or press ctrl+b (i chose ctrl+B) and choose a color you want.
You can add a drop shadow like i did. Your done!!

Peace,
Vixor-X, signing out...