The density of particles in a planet's rings can be measured using
A) infrared light.
B) the Doppler shift.
C) shadows cast by nearby moons.
D) light from background stars.
E) their proper motions.

Question

Quizplus · Accepted Answer

The density of particles in a planet's rings can be measured by observing how they block or dim the light from background stars as the rings pass in front of them. This method is known as stellar occultation.

The Density of Particles in a Planet's Rings Can Be