I wrote a little while ago:

> The artist of that painting is William K. Hartmann, who lives, paints,
>  writes, and participates in planetary explorations from his home in Tucson.
>  He is an extremely prolific painter and writer, and although that
particular
>  painting is not on his web page, other similar paintings are:
>
>       http://www.psi.edu/hartmann/index.html
>
>  Hartmann is the co-originator of the now most universally accepted idea for
>  the origin of the Moon (a Mars-sized object slammed into the Earth when it
>  was only a few hundred million years old; the crustal detritus from that
>  impact formed the Moon).

Let me say that I was wrong. The artist responsible for the CNN painting is
Don Davis, an artist who works under contract to NASA Ames. His gallery of
paintings are at:

     http://impact.arc.nasa.gov/gallery/

The CNN picture is a snippet of the top painting. My apologies.

Wirt Atmar