Great Circle

If you’re like me, you’ve spent a lot of time wondering why Saturn’s moon Iapetus is dark on one side. Well, here’s your answer.


  1. Jeanie Oliver says

    You know if I’m wrong and someone else is right and I get a chance for a do-over, I’m coming back as an astronomer, astronaut, or physicist, or all three! I love these type of posts.

    Posted October 7, 2009 at 10:50 pm | Permalink
  2. Malcolm says

    Thanks Jeanie! I love this stuff too.

    Posted October 7, 2009 at 11:58 pm | Permalink
  3. Charles says

    Wait, you mean we get to choose what we come back as? I’d better start planning!

    Fascinating stuff, Malcolm.

    Posted October 8, 2009 at 6:25 am | Permalink
  4. The Cassini Regio of Iapetus is evidence that the solar system hasn’t got all the bugs out yet.

    Jeffery Hodges

    * * *

    Posted October 8, 2009 at 11:17 pm | Permalink