"Dark" in this context could be ambigious. It is possible he meant that the sun didn't shine there (it was literally dark0, which is false. Another possibility its its "dark" to direct communication from Earth, which is what people who know what they are talking about understand it to mean and literally say.
What's more troubling is the next statement - "We don't know whats there". Well, we've done tons of imaging on that side, since the 1960s. So I think we know something about whats there. Its just that there doesn't appear to be that much interesting there, that merits a specific landing mission.
What's more troubling is the next statement - "We don't know whats there". Well, we've done tons of imaging on that side, since the 1960s. So I think we know something about whats there. Its just that there doesn't appear to be that much interesting there, that merits a specific landing mission.