Impact craters - Impact craters Figure 6 Degraded craters...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Impact craters Figure 6: Degraded craters on Enceladus, imaged by Cassini , February 17, 2005. The Hamah Sulci can be seen running from left to right along the bottom quarter of the image. Craters from Enceladus's ct 2 and cp cratered units are visible above them. Impact cratering is a common occurrence on many solar system bodies. Much of Enceladus's surface is covered with craters at various densities and levels of degradation. From Voyager 2 observations, three different units of cratered topography were identified on the basis of their crater densities, from ct 1 and ct 2 , both containing numerous 10–20 km-wide craters though differing in the degree of deformation, to cp consisting of lightly cratered plains. [38] This subdivision of cratered terrains on the basis of crater density (and thus surface age) suggests that Enceladus has been resurfaced in multiple stages. Recent Cassini observations have provided a much closer look at the ct 2 and cp cratered units. These high-resolution observations, like Figure 6, reveal that many of Enceladus's craters are
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

Ask a homework question - tutors are online