I actually don’t believe that consciousness stops at cells or solar systems :). I am a panpsychist which holds the view that everything in our universe is made up of consciousness (just not the super intelligent type that we typically associate with the word).
People usually get hung up on the idea… “how can you consider this rock to be conscious”. Well within this rock there are protons, neutrons, electrons, atoms, molecules, etc, that all “know” how to do their thing to form a rock. If things weren’t conscious then nothing in our universe would have a shape. I believe that higher states of consciousness arise from simpler lower states.