This is beside the point, but I'm having a really hard time parsing this:
We have also received historical data – so far, however, the lander had not been able to contact us earlier.
The way I'm reading it, it almost gives the impression he expects it may be able to have contacted us earlier in the future... which surely can't be right. Best I can come up with is "According to the historical data we received so far, this was its first chance to contact us." Or something like that. Would that make any sense?