It's A Spicy Metaball, Mario!

 'The interaction between two differently coloured 3D positive metaballs, created in Bryce.
Note that the two smaller metaballs combine to create one larger object.'

 'Coding Challenge #28: Metaballs'

The planet Earth as a (composite) metaball; the Earth as compost, composed of composite matter; mater Earth (mother Earth).

Hubble bubble toil and trouble (supernova picture by Hubble)

'Metaballs (also known as: Blobs)'