Is science a belief system?

I think of science as a method to systematically determine and verify aspects of the natural world.

A recent post described science as a belief system.

I would have thought that a 'belief system' would imply a broad set of rules for how to apprehend the natural world, for how to behave with others (morals) and perhaps also for how to think of weighty issues such as mortality. Science certainly gives you a way to apprehend the world, but it doesn't answer the second and third elements.

So....is science a belief system?