More expensive. More things to fail. Would also cause damage by scratching up the panels. That would significantly lower the amount of light it gets far sooner than dust collection. And people forget... Our landers/rovers and probes are friggin huge. Would need the equivalent of a push broom alongside all the mechanical stuff needed for that purpose alone.
Candid-Grape7189 t1_j119xv9 wrote
Reply to comment by garry4321 in This May Be NASA Insight Lander's Final Image From Mars by Buzzthejoker
More expensive. More things to fail. Would also cause damage by scratching up the panels. That would significantly lower the amount of light it gets far sooner than dust collection. And people forget... Our landers/rovers and probes are friggin huge. Would need the equivalent of a push broom alongside all the mechanical stuff needed for that purpose alone.