Celestial walnut

[Winfield Hill]

Our very own celestial walnut. Enjoy.

http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=1270
http://photojournal.jpl.nasa.gov/jpeg/PIA06166.jpg


--
Thanks,
- Win

 

[Paul Burridge]

On 11 Jan 2005 06:22:18 -0800, Winfield Hill
<hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote:

Our very own celestial walnut. Enjoy.

http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=1270
http://photojournal.jpl.nasa.gov/jpeg/PIA06166.jpg

I've adjusted it a bit to show more detail:

http://www.burridge8333.fsbusiness.co.uk/moon.jpg
--

"What is now proved was once only imagin'd." - William Blake, 1793.

 

[mc]

"Winfield Hill" <hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote in
message news:cs0neq02eju@drn.newsguy.com...

Our very own celestial walnut. Enjoy.

http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=1270
http://photojournal.jpl.nasa.gov/jpeg/PIA06166.jpg

Is the seam around the middle maybe an image-stitching artifact?

 

[Rich Grise]

On Tue, 11 Jan 2005 06:22:18 -0800, Winfield Hill wrote:

Our very own celestial walnut. Enjoy.

http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=1270
http://photojournal.jpl.nasa.gov/jpeg/PIA06166.jpg

Looks like another ancient deathstar to me.

http://www.xtec.es/recursos/astronom/cassini/mimas.jpg

I guess Luke & the Jedi didn't blow them all up. ;-)

Cheers!
Rich

 

[Jim Thompson]

On Tue, 11 Jan 2005 11:41:04 -0500, "mc" <mc_no_spam@uga.edu> wrote:

"Winfield Hill" <hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote in
message news:cs0neq02eju@drn.newsguy.com...
Our very own celestial walnut. Enjoy.

http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=1270
http://photojournal.jpl.nasa.gov/jpeg/PIA06166.jpg

Is the seam around the middle maybe an image-stitching artifact?

You did not read the text?

"The most unique, and perhaps most remarkable feature discovered on
Iapetus in Cassini images is a topographic ridge that coincides almost
exactly with the geographic equator. The ridge is conspicuous in the
picture as an approximately 20-kilometer wide (12 miles) band that
extends from the western (left) side of the disc almost to the
day/night boundary on the right. On the left horizon, the peak of the
ridge reaches at least 13 kilometers (8 miles) above the surrounding
terrain. Along the roughly 1,300 kilometer (800 mile) length over
which it can be traced in this picture, it remains almost exactly
parallel to the equator within a couple of degrees. The physical
origin of the ridge has yet to be explained. It is not yet clear
whether the ridge is a mountain belt that has folded upward, or an
extensional crack in the surface through which material from inside
Iapetus erupted onto the surface and accumulated locally, forming the
ridge. The origin of Cassini Regio is a long-standing debate among
scientists. One theory proposes that its dark material may have
erupted onto Iapetus's icy surface from the interior. Another theory
holds that the dark material represented accumulated debris ejected by
impact events on dark, outer satellites of Saturn. Details of this
Cassini image mosaic do not definitively rule out either of the
theories. However, they do provide important new insights and
constraints. "



...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Winfield Hill]

Jim Thompson wrote...

mc wrote:

Winfield Hill wrote ...
Our very own celestial walnut. Enjoy.

http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=1270
http://photojournal.jpl.nasa.gov/jpeg/PIA06166.jpg

Is the seam around the middle maybe an image-stitching artifact?

You did not read the text?

"The most unique, and perhaps most remarkable feature discovered on
Iapetus in Cassini images is a topographic ridge that coincides almost
exactly with the geographic equator. The ridge is conspicuous in the
picture as an approximately 20-kilometer wide (12 miles) band that
extends from the western (left) side of the disc almost to the
day/night boundary on the right. On the left horizon, the peak of the
ridge reaches at least 13 kilometers (8 miles) above the surrounding
terrain. Along the roughly 1,300 kilometer (800 mile) length over
which it can be traced in this picture, it remains almost exactly
parallel to the equator within a couple of degrees. The physical
origin of the ridge has yet to be explained. It is not yet clear
whether the ridge is a mountain belt that has folded upward, or an
extensional crack in the surface through which material from inside
Iapetus erupted onto the surface and accumulated locally, forming the
ridge. The origin of Cassini Regio is a long-standing debate among
scientists. One theory proposes that its dark material may have
erupted onto Iapetus's icy surface from the interior. Another theory
holds that the dark material represented accumulated debris ejected by
impact events on dark, outer satellites of Saturn. Details of this
Cassini image mosaic do not definitively rule out either of the
theories. However, they do provide important new insights and
constraints."

Yes, exactly like I said, our very own celestial walnut.


--
Thanks,
- Win