When Mars is at aphelion it must also be at
A) opposition.
B) greatest elongation.
C) superior conjunction.
D) None of these are correct.

Question

Quizplus · Accepted Answer

When Mars is at aphelion, it is at its farthest point from the Sun in its orbit, which does not necessarily coincide with opposition (when Earth is directly between Mars and the Sun), greatest elongation (when Mars, as seen from Earth, is farthest from the Sun in the sky), or superior conjunction (when Mars is directly behind the Sun from Earth's perspective). These positions are related to Earth's and Mars' relative positions in their orbits, not Mars' distance from the Sun.

When Mars Is at Aphelion It Must Also Be at