Which moon of Saturn has the surface with the widest range of ...

[leilurhhh]

Which moon of Saturn has the surface with the widest range of ages? Why?
 
  What will be an ideal response?

Question 2

Suppose you drop a clock toward a black hole. As you look at the clock from a high orbit, what will you notice?
 
  A) The clock will fall faster and faster, reaching the speed of light as it crosses the event horizon.
  B) Time on the clock will run slower as it approaches the black hole, and light from the clock will be increasingly redshifted.
  C) Time on the clock will run faster as it approaches the black hole, and light from the clock will be increasingly blueshifted.
  D) The clock will fall toward the black hole at a steady rate, so that you'll see it plunge through the event horizon within just a few minutes.

[tennis14576]

Answer to Question 1

Enceladus has one ancient hemisphere, very cratered, but the other has been reworked with tectonic ridges and possibly volcanism as well. As with the mare on our own Moon, tidal forces act differentially on the two hemispheres.

Answer to Question 2

B

[leilurhhh]

Thank you!

[tennis14576]

Always glad to help...