Asteroids are discovered by their
A) great gravitational effect on Mars' orbit
B) great gravitational effect on Jupiter's orbit
C) orbital motion around the planet Venus in photographs
D) orbital motion among the stars in successive images

Question

Quizplus · Accepted Answer

Asteroids are typically discovered by observing their motion against the background of stars in successive images, which allows astronomers to track their orbits.

Asteroids Are Discovered by Their