Or so we thought. And so in our initial explorations, we were totally focused on exploring the boundary of creation, looking at the volcanic features running along that entire 42,000 miles.
Det var vad vi trodde. Så under våra tidiga utforskningar- -var vi helt inriktade på geologiska frågor. Vi tittade på de vulkaniska formationerna som sträcker sig 6 800 mil.