Scope syntax is unclear to me

[starling000]

The initial scope exercises provide the following lines of code to create what it calls local variables:

const myNightSky = () => {
  return 'Night Sky: ' + satellite + ', ' + stars + ', ' + galaxy;
};

I get that const myNightSky = () makes that variable an empty function, but what does => do here? Why not just =? And how does this limit which variables can be accessed from where?

[ionatan]

That function has no local variables in it. Note that what’s between the curly braces is the body of the function (google: mdn arrow function for description of syntax)