Sentences with phrase «ancient impact basin»

At number 1: Was Pluto's frozen heart formed in an ancient impact basin and was it once closer to the north pole?

Scientists have explained Sputnik Planitia's youthful appearance by positing that it is an ancient impact basin — a giant crater filled with thick floes of younger ice that, driven by heat seeping up from below, churn and refresh the surface.

Not exact matches

Although no very ancient terrestrial impact structures are preserved, the Sudbury basin provides a unique opportunity to study the sediment that filled the basin as a guide to what the earlier impact craters would have looked like.