Space News
space history and artifacts articles

Messages
space history discussion forums

Sightings
worldwide astronaut appearances

Resources
selected space history documents

Websites
related space history websites

  collectSPACE: Messages
  Satellites - Robotic Probes
  Cassini-Huygens at Saturn: Questions, comments (Page 6)

Post New Topic  Post A Reply
profile | register | preferences | faq | search


This topic is 7 pages long:   1  2  3  4  5  6  7 
next newest topic | next oldest topic
Author Topic:   Cassini-Huygens at Saturn: Questions, comments
DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 07-26-2009 12:53 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
The Cassini imaging team has released a new image of Saturn's largest moon Titan showing the highlands areas.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 08-13-2009 09:55 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
A once in every 15 years event happened Aug. 11 -- equinox on Saturn. When this occurs the sun angle is the same as the ring plane resulting in unusual illumination and shadows. Some of the first pictures from Cassini showing this phenomenon can be found here.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 08-27-2009 09:25 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
The Cassini imaging team led by Dr. Carolyn Porco continues to regularly release spectacular photographs of the ringed planet taken by the Cassini spacecraft. This one shows shadows on the ring system by Saturn itself and one of its moons.

tegwilym
Member

Posts: 2303
From: Crest Airpark (S36) Kent, WA
Registered: Jan 2000

posted 09-22-2009 05:34 PM     Click Here to See the Profile for tegwilym   Click Here to Email tegwilym     Edit/Delete Message   Reply w/Quote
I think that Saturn image is my favorite one yet, that is just so very cool. But then again, next month another really great shot will come back that I'll just say is my favorite.

Although, Phoenix on the parachute taken by the MRO is still the image to beat!

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 10-15-2009 10:43 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
There is a spectacular new view of the plumes emanating from Saturn's moon Enceladus in this new raw image released recently.

gliderpilotuk
Member

Posts: 3248
From: London, UK
Registered: Feb 2002

posted 10-18-2009 03:14 AM     Click Here to See the Profile for gliderpilotuk   Click Here to Email gliderpilotuk     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by tegwilym:
Although, Phoenix on the parachute taken by the MRO is still the image to beat!
I second that!

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 10-30-2009 02:35 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
CICLOPS has released another beautiful natural color image of Saturn and the rings taken after the equinox. Mimas can also be seen. These images never fail to astound me, considering how far Cassini is from Earth and how long it has been orbiting the Saturn system.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 11-03-2009 07:15 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Cassini flew within 60 miles of Saturn's moon Enceladus yesterday (Nov. 2). The first raw images show the cracked, icy surface of the moon and the gigantic plumes going into space containing water. I am in awe of the wonders of the Saturnian system revealed in great detail by Cassini-- from Saturn's rings to the methane lakes of Titan to water ice on Enceladus.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 11-20-2009 02:11 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
NASA has fascinating new imagery of the moons of Saturn including this shot of Rhea in front of Titan.

(Colorized by user at Unmanned Spaceflight.)

tegwilym
Member

Posts: 2303
From: Crest Airpark (S36) Kent, WA
Registered: Jan 2000

posted 11-22-2009 01:13 PM     Click Here to See the Profile for tegwilym   Click Here to Email tegwilym     Edit/Delete Message   Reply w/Quote
No comments here yet on this? I'll be the first then! You gotta check out the latest images from Cassini from the low pass over the geysers the other day.

Very cool!

gliderpilotuk
Member

Posts: 3248
From: London, UK
Registered: Feb 2002

posted 11-23-2009 03:52 PM     Click Here to See the Profile for gliderpilotuk   Click Here to Email gliderpilotuk     Edit/Delete Message   Reply w/Quote
Probably everyone's speechless, Tom. I'm running out of superlatives for this mission.

tegwilym
Member

Posts: 2303
From: Crest Airpark (S36) Kent, WA
Registered: Jan 2000

posted 11-23-2009 04:36 PM     Click Here to See the Profile for tegwilym   Click Here to Email tegwilym     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by gliderpilotuk:
Probably everyone's speechless, Tom. I'm running out of superlatives for this mission.
Ha! Yeah I know the feeling. I stopped breathing for a while when I saw those geysers....and that was after falling out of my chair and picking myself up from under my desk.

Blackarrow
Member

Posts: 2263
From: Belfast, United Kingdom
Registered: Feb 2002

posted 11-23-2009 05:08 PM     Click Here to See the Profile for Blackarrow     Edit/Delete Message   Reply w/Quote
My jaw is also hanging down against my knees. Looking at "Raw Previews 3 and 4", I want to know whether those are geysers errupting from dark unlit areas into sunlight, or whether the bright smudges that look like erruptions are just after-images or camera-artifacts from earlier images. Any thoughts?

ilbasso
Member

Posts: 1501
From: Greensboro, NC USA
Registered: Feb 2006

posted 11-24-2009 12:04 PM     Click Here to See the Profile for ilbasso   Click Here to Email ilbasso     Edit/Delete Message   Reply w/Quote
Those are indeed geysers erupting from just past the terminator. Visit this thread at unmannedspaceflight.com, click on the embedded photo, and you'll see an map-projected animation that aligns the night-side plumes with some of the previously-seen "tiger stripes" on Enceladus.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 12-13-2009 11:20 AM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
This weekend Cassini has another encounter with Titan, Saturn's largest moon. This raw image shows some surface detail taken when Cassini was 95,000 km from Titan.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 12-18-2009 08:15 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Check out this latest incredible Cassini picture of Titan -- sunlight glinting off a methane lake.

SpaceAholic
Member

Posts: 3276
From: Sierra Vista, Arizona
Registered: Nov 1999

posted 12-24-2009 04:29 PM     Click Here to See the Profile for SpaceAholic   Click Here to Email SpaceAholic     Edit/Delete Message   Reply w/Quote
JPL has released a movie of Saturn's moon's compiled from Cassini images entitled Saturn Moon Ballet and scripted to the NutCracker Suite.

tegwilym
Member

Posts: 2303
From: Crest Airpark (S36) Kent, WA
Registered: Jan 2000

posted 12-28-2009 02:27 PM     Click Here to See the Profile for tegwilym   Click Here to Email tegwilym     Edit/Delete Message   Reply w/Quote
Nice! I'm adding that video to show at tomorrow night's astronomy club meeting.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 01-29-2010 06:48 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Here is a new computer animation of the topography of Titan from the talented bloggers at unmannedspaceflight.com.

There are also new raw images of Prometheus, one of Saturn's smaller moons.

cspg
Member

Posts: 4820
From: Geneva, Switzerland
Registered: May 2006

posted 02-15-2010 07:20 AM     Click Here to See the Profile for cspg   Click Here to Email cspg     Edit/Delete Message   Reply w/Quote
After the beautiful STS-130 photo of Endeavour across Earth's limb, this photo of Saturn is just as beautiful, Astronomy Picture of the Day (APOD) for Feb. 15.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 03-06-2010 03:08 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
The Cassini spacecraft made its closest approach to Rhea, Saturn's second largest moon, flying just 100 km above the cracked and cratered surface on March 2. The raw images are now available.

Cassini also flew near the small moon Helene the next day.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 03-29-2010 09:23 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
The CICLOPS site features some new images of Saturn's moon Mimas, the so-called "Death Star" moon with the huge crater Herschel. The pictures include a mosaic of entire moon in greater detail than previously available and close-up images of Herschel, in color and 3-D.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 04-10-2010 05:49 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
On April 7, Cassini made a very close approach to Saturn's moon Dione. The spacecraft sent back some amazing pictures from as close as 1,000 miles to the frozen moon.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 05-20-2010 09:11 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Cassini made another flyby of Enceladus on May 18. The spacecraft sent back images of the moon's cracked surface and some spectacular views of the giant water plumes (or geysers) emanating from the polar regions.

The raw images are available at the CICLOPS website.

In my opinion, these water plumes from Enceladus and the volcanoes of Jupiter's moon Io are some of the strangest phenomenon of the outer planets.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 05-22-2010 07:27 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
The Boston Globe's Big Picture on May 21 featured some of the best images taken by Cassini of Saturn and its moons. It's great to see some publicity for these magnificent photos in a general interest publication.

MCroft04
Member

Posts: 1326
From: Smithfield, Me, USA
Registered: Mar 2005

posted 05-22-2010 07:56 PM     Click Here to See the Profile for MCroft04   Click Here to Email MCroft04     Edit/Delete Message   Reply w/Quote
Dave, Thanks for the link. Spectacular!

cspg
Member

Posts: 4820
From: Geneva, Switzerland
Registered: May 2006

posted 05-23-2010 12:01 AM     Click Here to See the Profile for cspg   Click Here to Email cspg     Edit/Delete Message   Reply w/Quote
Space shuttle missions generate stunning pictures but none match those by Cassini. Truly amazing.

Send more probes and rovers!

Scott
Member

Posts: 3303
From: Houston, TX
Registered: May 2001

posted 05-23-2010 08:54 AM     Click Here to See the Profile for Scott   Click Here to Email Scott     Edit/Delete Message   Reply w/Quote
Amazing and beautiful!

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 08-17-2010 08:21 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
The Cassini spacecraft has just completed close fly-bys of Saturn's moons Dione, Tethys and Enceladus. There are some spectacular close up views of the sources of the geysers emanating from Enceladus, as well as the craters on Tethys. The raw photos can be found here.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 09-03-2010 07:30 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
This spectacular video shows the prominent equatorial ridge on Saturn's moon Iapetus. The ridge, Valterne Mons, is about 20 km wide and an amazing 18 km high. The images were obtained from the Cassini spacecraft as it orbits Saturn in its extended mission.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 09-10-2010 10:16 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
NASA has released pictures of Cassini's September 3 flyby of Dione, one of Saturn's icy moons. There are some good pictures of the icy high canyon walls which give a wispy appearance to Dione when viewed from far away.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 10-19-2010 07:39 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Cassini flew by several of Saturn's moons during a pass last week (October 14-17). The spacecraft sent back some great close-up views of Rhea and Dione, passing within 14,000 miles. Some of the raw pictures can be found here.

A summary of the flybys can be found here.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 11-25-2010 09:55 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
National Geographic: Saturn Moon Has Oxygen Atmosphere
NASA's Cassini spacecraft, which has been orbiting the Saturnian system since 2004, detected the oxygen atmosphere around Rhea during a close flyby of the icy moon in March.

Cassini's data show that molecular oxygen (O2) forms inside the moon's surface ice when water molecules (H2O) are split by energetic ions, a process known as radiolysis. The oxygen then gets ejected from the surface ice and captured by Rhea's gravity to form the atmosphere.

"A loose analogy might be carbon dioxide dissolved, or trapped, in a carbonated beverage, except here we are not talking about liquid water but rather frozen ice at extremely low temperatures," Teolis said.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 11-30-2010 08:51 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Cassini is functioning again, and just flew by Saturn's "sponge moon" Hyperion. A flyby movie made from 61 still frames:

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 12-06-2010 09:25 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
The CICLOPS website has six new images of Saturn's icy moon Enceladus taken Nov. 30 by the orbiting Cassini on a pass as low as 50 km above the surface. Two of the pictures show the eerie water geysers emanating from Enceladus' south polar region.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 12-21-2010 07:44 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Two treats posted by the Cassini imaging team today.

First, preview shots of Cassini's flyby 50 km over Enceladus' northern hemisphere on Dec. 20-21. Some of the images show the water geysers spewing into space from the icy moon's south polar regions.

Second, the CICLOPS team has posted highly detailed processed images of Rhea. One of these shows in 3D the fractured topography of the moon.

CICLOPS, headed by Dr. Carolyn Porco, has done an outstanding job of processing the millions of images Cassini has sent back in its exploration in orbit around Saturn. Nature's beauty at its best!

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 01-13-2011 08:53 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
Cassini flew by Saturn's moon Rhea on Jan. 11, returning closeup pictures of the cratered surface as well as panorama views of Rhea and some of Saturn's other moons.

gliderpilotuk
Member

Posts: 3248
From: London, UK
Registered: Feb 2002

posted 01-14-2011 03:55 AM     Click Here to See the Profile for gliderpilotuk   Click Here to Email gliderpilotuk     Edit/Delete Message   Reply w/Quote
Just amazing. The "Five Moon" shot is spectacular. We're seeing images that until recently only a sci-fi author could speculate on.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 02-04-2011 03:59 PM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
NASA has released findings that show that Titan has water-containing cirrus clouds, as well as the more ubiquitous hydrocarbon clouds.

There are also new close-up pictures of moons Rhea and Helene from a flyby by Cassini last week.

DChudwin
Member

Posts: 1041
From: Lincolnshire IL USA
Registered: Aug 2000

posted 03-13-2011 07:59 AM     Click Here to See the Profile for DChudwin   Click Here to Email DChudwin     Edit/Delete Message   Reply w/Quote
An incredible animation of Cassini flying around Saturn and through its rings can be found here.

The animation is made from thousands of actual still pictures taken by the spacecraft. There are several sequences but the color one towards the end is the most spectacular.

(Thanks to Tracy Kornfeld for the link.)


This topic is 7 pages long:   1  2  3  4  5  6  7 

All times are CT (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | The Source for Space History & Artifacts

Copyright 1999-2014 collectSPACE.com All rights reserved.


Ultimate Bulletin Board 5.47a





advertisement