## College Physics (4th Edition)

Through her telescope Mavis is observing activity that took place $15\times10^{9}$ years ago. If she were able to reach the site, she would find that time had moved on and find the galaxy in some later stage of development.
Through her telescope Mavis is observing activity that took place $15\times10^{9}$ years ago. If she were able to reach the site, she would find that time had moved on and find the galaxy in some later stage of development.