When the Sun, Earth, and a planet all lie along a straight line, the planet is at
A) quadrature.
B) only opposition.
C) only greatest elongation.
D) only conjunction.
E) either opposition or conjunction.

Question

Quizplus · Accepted Answer

When the Sun, Earth, and a planet are aligned, the planet can be at either opposition (when the planet is on the opposite side of Earth from the Sun) or conjunction (when the planet is on the same side of Earth as the Sun).

When the Sun, Earth, and a Planet All Lie Along