Fantastic explanation, thank you. For a more detailed description of the Milky Way's rotation curve, this is a brief segment from David Butler's How Far Away I

Fantastic explanation, thank you. For a more detailed description of the Milky Way's rotation curve, this is a brief segment from David Butler's How Far Away Is It video series (which I highly recommend): https://youtu.be/uVxrsJ5lZlQ?si=ZwpBDpAvTV8AALke&t=1890 https://youtu.be/uVxrsJ5lZlQ?si=ZwpBDpAvTV8AALke&t=1890