Power Management is of Preeminent Importance
•Power availability affects all aspects of deployed internet operation
–Solar conversion is the primary power source for foreseeable future
–Example:  The average solar intensity in Mars orbit is 590 W/m2, compared with 1370 W/m2 in Earth orbit
–Surface-based solar panels are subject to
•Atmospheric dust limiting available solar energy
•Dust build-up on/erosion of solar panels, reducing effectiveness over time
•Location-based reductions in solar intensity
•Seasonal variations in solar intensity
•Efficiency of communication at all layers is required to offset the limitations of power availability