The photographer from Exminster, near Exeter, said he created the pictures through a combination of experimentation and good luck
'Sometimes I stand back and just watch a bubble as it hangs in the air. I walk around it, admiring it, and I see how the light plays on it,' Mr Heeks said.
'And sometimes I photograph a bubble and see things I didn't expect to see. I didn't realise these bubbles would look like planets until I caught one or two good ones and then looked at them carefully on the camera screen.
'I find it uncanny that they seem to have an atmosphere just like a planet. And with the sun corona on the surface, it reminds me of pictures of the earth from space, where the sun appears behind Earth's surface.'