In your kitchen cabinet, you’ve probably got a spray bottle with an adjustable nozzle. If you twist the nozzle one way, it sprays a 
fine mist into the air.
You twist the nozzle the other way, it squirts a jet of water in a straight line.
You turn that nozzle to the exact position you want so you can wash a mirror, clean up a spill, or whatever.
If the universe had expanded a little faster, the matter would have sprayed out into space like fine mist from a water bottle – so fast, a gazillion particles of dust would speed into infinity and never even form a single star. Read more »
