How were the rings of Uranus first discovered?
A)by the Ulysses spacecraft, when observing from above the Sun's north pole
B)by the Hubble Space Telescope, observing in infrared light
C)by Voyager 2, during its pass through the Uranian system
D)from an airborne telescope, when each ring momentarily blocked off light from a background star

Question

Quizplus · Accepted Answer

The rings of Uranus were first discovered in 1977 from an airborne telescope. This discovery occurred when the rings occulted, or blocked off, the light from a distant star, allowing astronomers to detect their presence.

How Were the Rings of Uranus First Discovered