Author Question: Compared to the orbits of Venus and Earth, the orbits of both Mercury and Mars have much ________ ... (Read 89 times)

cartlidgeashley · **on:** Jul 27, 2018

Compared to the orbits of Venus and Earth, the orbits of both Mercury and Mars have much ________ eccentricity.

Fill in the blank(s) with correct word

Question 2

In addition to the proper motion, we also need the ________ to find the transverse velocity of a star across our line of sight.

A) mass B) temperature C) composition D) parallax E) color