What is true about the foci of a planet in elliptical orbit?
a. Earth is located in the center of the orbit.
b. The sun is located at one focus.
c. Earth is located at one focus.
d. The sum is located in the center of the orbit.
a. Earth is located in the center of the orbit.
b. The sun is located at one focus.
c. Earth is located at one focus.
d. The sum is located in the center of the orbit.