The researchers say this indicates an upper crust made of a mixture of rock and ice — in which small craters could be carved — supported by a more viscous mantle of ice lower down, which would allow
the biggest impact basins to relax away with time, like silly putty returning to its original shape.
Not exact matches
MESSENGER — which stands for Mercury surface, space environment, geochemistry, and ranging — also determined that Mercury's giant Caloris
basin, among the
biggest impact craters in the solar system, spans 1,500 kilometers — nearly one third of the planet's diameter and 200 kilometers more than previous estimates.
A surface feature of great interest to scientists is the Caloris
basin, an
impact crater about 1300 km in diameter, one of the
biggest such craters in our solar system.
And, Head notes, Orientale is not even the
biggest lunar
basin — a larger
impact such as the one that formed the Imbrium
Basin would affect an even larger fraction of the terrain.
A well - chosen decorative
basin, or a bowl made from an unusual material can have a
big impact on the space.