How were the rings of Uranus discovered?
A. They were discovered by the Voyager 2 spacecraft when it flew by Uranus by using a telescope to observe Uranus moving in front of a distant star
B. They were discovered with the Hubble Space Telescope
C. They were seen through a small telescope at the same time the planet was
D. Through the radio waves given off as they interact with the magnetic field

The rings of Uranus were discovered by James L. Elliot, Edward W. Dunham, and Jessica Mink on March 10, 1977, using the Kuiper Airborne Observatory . They were discovered serendipitously while the astronomers were trying to study Uranus' atmosphere by observing the planet pass in front of a star ¹. The star appeared to blink out for a brief moment five times both before and after it was eclipsed by Uranus, indicating that Uranus has a system of narrow rings.