William and Caroline Herschel measured the relative brightness of stars visible from Earth. These measurements gave evidence for which of the following characteristics of the Milky Way galaxy?

It's have to be 12 or idk

Kiloleter, mega leterhope this !

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.