Multiple Choice
The semi-major axis, a, of an elliptical planetary orbit is equal to the
A) width of the ellipse
B) distance between the planet and the Sun at perihelion
C) average distance between the planet and the Sun
D) distance between the planets and the Sun at aphelion
Correct Answer:

Verified
Correct Answer:
Verified
Q61: Even though the heliocentric model of Copernicus
Q62: Which of the following is not a
Q63: The Ptolemaic model has planets moving in<br>A)
Q64: Two asteroids have identical masses. However, one
Q65: A scientist intuitively believes that a higher
Q67: The astronomical object in our sky which
Q68: Asteroid 13681 Monty Python has an orbit
Q69: The geocentric model of the Greeks consisted
Q70: The observations of sunspots on the Sun
Q71: The first person to suggest that the