When no human has been there, in person or in sensors, then no "research" can have been done - only abstract extrapolation and speculation on grounds of researched things from planet Earth.
No object of examination in reach of your examination tools and methods - no research on it being done.
Precisely, pure speculation, nothing more
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Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!