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Author: Sam WormleySam Wormley
Date: Apr 30, 2008 19:57
Jupiter's Shadowy Ring Behavior
http://sciencenow.sciencemag.org/cgi/content/full/2008/430/2
By Phil Berardelli
ScienceNOW Daily News
30 April 2008
Jupiter's faint rings might seem plain-Jane compared with Saturn's spectacular disks, but
they have vexed astronomers for years, because the outer ring is lopsided. Now researchers
report that the ring was pulled out of round by a tug of war between Jupiter's powerful
magnetic field and the energizing effects of sunlight. The discovery should improve
understanding of the forces that shape the rings around Saturn and other planets.
See: http://sciencenow.sciencemag.org/cgi/content/full/2008/430/2
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Author: dfhytkiyumdfhytkiyum
Date: Apr 30, 2008 06:41
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Author: Nasir_JointecnNasir_Jointecn
Date: Apr 30, 2008 05:03
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Author: canopus56canopus56
Date: Apr 29, 2008 16:18
Rogers, JOhn H. Feb. 2008. The accelerating circulation of Jupiter's
Great Red Spot. J. Br. Astron. Assoc. 118(1):14-20
http://www.britastro.org/journal/118-1.htm
Summarized and abstracted from the above article.
Since about 1949, the characteristics of the GRS changed as follows:
1) Length: ~28 degs to 16-18 degs, the smallest ever recorded. 1 deg
= 1160km.
2) Circulation period of vortex within GRS: 12 to 4.5 days
3) Wind speeds as measured by amateur CCD and spacecraft imaging of
streaks and spots within the GRS:
1979 Voyager 1 110-135 m/s
1979 Voyager 2 110 m/s
1996 Galileo 115-135 m/s
2000 Galileo 145-165 m/s
ALPO 2001-2002 100 +-8 m/s
ALPO 2002-2003 89-97 m/s
BAA 2006 112 m/s (this paper)
100 meters per second equals 360 kilometers per hour
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Author: AndreLTRAndreLTR
Date: Apr 29, 2008 10:36
Hello,
I have a first version ETX-90 and would like to upgrade it to the
newer EC model. I looked throughout to no avail. Could anyone shed a
light sbout how to solve this please?
Thank you,
André Luiz
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Author: Nasir_JointecnNasir_Jointecn
Date: Apr 29, 2008 04:59
- Natural Voice Guidance
- High Resolution Touch Screen
- Bluetooth
- MP3 & Video Player
- Picture Viewer
- 2D/3D View
- Automatic Reroute
- Day/Night Mode
- Walking Mode
- Add unlimited waypoints
- Space to add your own music, pictures, and video
- Extensive POI database
- Map landforms such as rivers & parks displayed
- Support E-book function
- AC wall charger
- Built-in Li-Ion Battery
- Audio output: built-in 2W speaker and earphone jack
For further information please visit our website
http://www.jointech.com.hk
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Author: AmjadAmjad
Date: Apr 29, 2008 03:11
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Author: Kickin' Ass and Takin' NamesKickin' Ass and Takin' Names
Date: Apr 29, 2008 03:02
Scientific American Magazine - June 18, 2002
15 Answers to Creationist Nonsense
Opponents of evolution want to make a place for creationism by tearing
down real science, but their arguments don't hold up
By John Rennie
When Charles Darwin introduced the theory of evolution through natural
selection 143 years ago, the scientists of the day argued over it
fiercely, but the massing evidence from paleontology, genetics,...
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