Mars is best viewed from Earth when it is at:
A)perihelion.
B)opposition.
C)conjunction.
D)aphelion.
E)none of the above.

Question

Quizplus · Accepted Answer

Mars is best viewed from Earth when it is at opposition, which is when Earth and Mars are in a straight line and Mars is closest to Earth. This occurs approximately every two years. Mars is best viewed from Earth when it is at opposition, which is when Mars, Earth, and the sun are in a straight line with Earth in the middle. This occurs about every 26 months and makes Mars appear brighter and closer than at any other time.

Mars Is Best Viewed from Earth When It Is At