If Earth had a further orbit it would have a larger scale to measure distance to other planets/stars. Earth's current orbit cannot measure distances to far out stars because their distance is too great. But if Earths orbit was larger the stars much further out could be more accurately measured. 11. How does absolute visual magnitude tell us the intrinsic brightness of a star?
Absolute visual magnitude is a calculation with no relative varying distance, as opposed to something like visual magnitude which is comparing the stars brightness in relation to its distance from earth. Absolute magnitude is comparing all stars at a distance from 10 pc from that star. Essentially lining up all stars right next to each other. This more standard based measurement can help us determine to intrinsic brightness of the star, in another measurement based on all stars. 12. How do absolute visual magnitude