As a lander the power will be generated with solar panels and in order to maximize the efficiency of the solar panels a location near the equator needed to be chosen. This led to helping decide the final landing area within the Elysium Planitia, a large relatively flat plain like feature that lies on the equator. However a decision on the specific landing spot has not been made yet.
On board will be two types of instruments that will be used for a variety of tests including the use of a seismometer, and a heat flow probe. Cameras will record daily events and operations. Precise measurements of the distance to the sun will be made that will enable scientists to determine how the planet wobbles as it is tugged on by the Sun’s gravity. The wobble of a planet is determined by how unevenly mass is distributed throughout the planet’s interior. Areas with a greater concentration of mass in one part of the interior will cause that part of the planet to have a greater attraction with the Sun than an area with a less dense lower concentration of mass. So as the planet rotates and revolves with respect to the Sun the gravitational attraction between the two varies slightly causing the wobble. Among other things this results in a better understanding of how the process of differentiating occurred within the planet and how that mass is distributed within the interior.
Click here to go to the InSight mission web site for more information.
Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.