Search found 631 matches

by dougettinger
Tue Mar 19, 2013 1:07 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: GRAIL Maps the Moons Gravity (2013 Mar 19)
Replies: 26
Views: 8610

Re: APOD: GRAIL Maps the Moons Gravity (2013 Mar 19)

What does this GRAIL depiction imply for - Red spots? Blue spots? Blue spots surrounded by red? Blue spots with red spots in the center? I realize the differences in gravity as described, but does anyone have any advanced ideas about the overall implications? I definitely have my own ideas. Doug Ett...
by dougettinger
Mon Nov 12, 2012 2:38 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Van Allen Probes: Radiation Belt Storm Probes (RBSP)
Replies: 39
Views: 19074

Re: Radiation Belt Storm Probes (RBSP): The Electric Atmosph

Thank you, Bystander. Yes, we will all stand by to receive answers about the Earth's magnetosphere.

Doug
by dougettinger
Mon Nov 12, 2012 2:23 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Asteroid Capture by Outer Planets
Replies: 11
Views: 3741

Re: Asteroid Capture by Outer Planets

I am not asking to place your life or career on the line, but certainly ones reputation is important. I was only asking for one or two possibilities that should be in the range of scientific thought. You were still very helpful.

Doug
by dougettinger
Fri Nov 09, 2012 3:30 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Asteroid Capture by Outer Planets
Replies: 11
Views: 3741

Re: Asteroid Capture by Outer Planets

Sorry, I never heard of asymmetry used in these terms. But, yes, tidally locked bodies can lead to asymmetry.

So not too much was ventured in saying Dione was created by asymmetry of tidal locking and resurfacing processes.

Doug
by dougettinger
Thu Nov 08, 2012 9:49 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Asteroid Capture by Outer Planets
Replies: 11
Views: 3741

Re: Asteroid Capture by Outer Planets

Before we leave this subject, what is "asymmetry of a tidally locked body" and how does it affect hemispherical-wide surface differences ?

Doug
by dougettinger
Thu Nov 08, 2012 7:12 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Asteroid Capture by Outer Planets
Replies: 11
Views: 3741

Re: Asteroid Capture by Outer Planets

Excellent. Our Great Protectors keep doing their duty. And the solar system keeps doing what we suspect but at a hopefully much diminished rate. It is very strange that I missed or neglected this observational data. I am still very curious what you personally think happened to Dione in order to have...
by dougettinger
Thu Nov 08, 2012 6:27 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Asteroid Capture by Outer Planets
Replies: 11
Views: 3741

Re: Asteroid Capture by Outer Planets

Thank you for this prompt reply, Chris. I totally agree with you answer to assumption number 2. Perhaps I incorrectly referred to comets (known to be much like asteroids in composition) as asteroids. Although some asteroids in highly elliptical orbits can be both in the inner and outer solar system,...
by dougettinger
Thu Nov 08, 2012 5:17 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Diameter of Solar System
Replies: 46
Views: 6867

Re: Diameter of Solar System

Sometimes the author neglects to state the conditions or I may neglect the conditions that are stated far away in another paragraph.

Always working hard to be less confused,
Doug
by dougettinger
Thu Nov 08, 2012 5:10 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Asteroid Capture by Outer Planets
Replies: 11
Views: 3741

Asteroid Capture by Outer Planets

I would like to have verified the following assumptions about the capture of asteroids by the outer gas giants. This topic was brought up during the discussion of the moon, Dione, but got lost in the flurry of thoughts. The assumptions are delinated below. 1. A majority of asterioids of the solar sy...
by dougettinger
Thu Nov 08, 2012 4:33 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Diameter of Solar System
Replies: 46
Views: 6867

Re: Diameter of Solar System

Conversion from radius to diameter is a factor of two if the object is roughly round or spherical.

Conversion of times can really be confusing. Is the time expressed measured from the Big Bang or from the present.

Doug
by dougettinger
Mon Nov 05, 2012 9:41 pm
Forum: The Communications Center: Breaking Science News
Topic: Cassini Sees Huge Burp at Saturn after Large Storm
Replies: 8
Views: 4495

Re: Cassini Sees Huge Burp at Saturn after Large Storm

Neufer, your reply explains the extra heat energy but not the burp. The burp is similar (i.e., unexplainable) to geologic hot spots on Earth except that Earth's hot spots are more like continuous farts. I think you're closer to the truth than you imagine. Saturn is still devouring its sons and daugh...
by dougettinger
Mon Nov 05, 2012 9:31 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Saturns Moon Dione in Slight Color (2012 Nov 05)
Replies: 30
Views: 10287

Re: Dione's craters on one side.

It makes perfect sense to me that Dione should be most heavily cratered on its trailing side, because that is the direction from which the vast majority of material comes, including the vast majority of fast impacts. Smaller orbits have a faster angular velocity than larger orbits. They approach th...
by dougettinger
Sun Nov 04, 2012 11:09 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Curiosity: Mars Science Laboratory
Replies: 277
Views: 263005

Re: Curiosity: Mars Science Laboratory

Has NASA proposed the origin of the Jake Matijewic Rock? Did it fall from some low ledge? Was it carried to this location by water transport? Is the rock some fallen debris from a nearby impact?

Doug
by dougettinger
Sun Nov 04, 2012 10:43 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Dawn: Journey to the Asteroid Belt
Replies: 181
Views: 309541

Re: Dawn: Journey to the Asteroid Belt

Owlice, thank you. I am not very good at following the "threads" of abstracts and short articles. I will try to improve. I thought that someone would know already if this matter was sorted out. Besides being the Guardian of Codes what is your background that brings you to the forum? Are &q...
by dougettinger
Sun Nov 04, 2012 10:25 pm
Forum: The Communications Center: Breaking Science News
Topic: Cassini Sees Huge Burp at Saturn after Large Storm
Replies: 8
Views: 4495

Re: Cassini Sees Huge Burp at Saturn after Large Storm

Oh yes, now it get it. The burp was indigestion. Art, you seem to be knowledgeable of classical artists AND myths. I am hoping you can expand on a rumor of Roman and Greek myths. The myths are supposely derived from earlier times. The myths actually portray the actions between the planets told by a ...
by dougettinger
Fri Nov 02, 2012 3:08 pm
Forum: The Communications Center: Breaking Science News
Topic: Cassini Sees Huge Burp at Saturn after Large Storm
Replies: 8
Views: 4495

Re: Cassini Sees Huge Burp at Saturn after Large Storm

The size of the asteroid can be roughly estimated by the known size of the cometary pieces that caused certain size storms on Jupiter. How much ethylene is required to be mixed into Saturn's atmosphere to cause its detection? I do not know the parts per million needed for detection by our probe. But...
by dougettinger
Fri Nov 02, 2012 2:52 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Dawn: Journey to the Asteroid Belt
Replies: 181
Views: 309541

Re: Dawn: Journey to the Asteroid Belt

Thank you for referencing the above articles. The two articles "gsa" and "adsabs" differ in their dating of the largest impact craters on Vesta. Owlice, do you have any resolution to these different dating criteria of the Vesta impact craters. The "gsa" article states ...
by dougettinger
Fri Nov 02, 2012 2:30 pm
Forum: The Communications Center: Breaking Science News
Topic: Cassini Sees Huge Burp at Saturn after Large Storm
Replies: 8
Views: 4495

Re: Cassini Sees Huge Burp at Saturn after Large Storm

Nobody has ventured forward from NASA to propose the cause of this huge storm on Saturn. My inductive reasoning leads me to believe it could only be the result of a large asteroid strike that has large amounts methane. To suggest that Saturn burped is very unlikely. What could be the conceivable rea...
by dougettinger
Mon Oct 29, 2012 7:39 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Dawn: Journey to the Asteroid Belt
Replies: 181
Views: 309541

Re: Dawn: Journey to the Asteroid Belt

Thank you for referencing the above articles. The two articles "gsa" and "adsabs" differ in their dating of the largest impact craters on Vesta. Owlice, do you have any resolution to these different dating criteria of the Vesta impact craters. The "gsa" article states t...
by dougettinger
Mon Oct 29, 2012 6:28 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Distribution of Oort Cloud objects
Replies: 14
Views: 3960

Re: Distribution of Oort Cloud objects

Doug, thanks for answering my question; I appreciate it. By "published," I mean in peer-reviewed journals such as ApJ, A&A, and the like. Have you submitted your work to the major respected astronomy journals and been published by them? If you are not willing to subject your work to r...
by dougettinger
Mon Oct 29, 2012 6:18 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Distribution of Oort Cloud objects
Replies: 14
Views: 3960

Re: Distribution of Oort Cloud objects

Do not just be a bystander. Please help me with my communications. How do I receive peer review or get published in a ApJ or AetA journal ? I do not have direct connections to the academic community.

Doug
by dougettinger
Mon Oct 29, 2012 5:32 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Van Allen Probes: Radiation Belt Storm Probes (RBSP)
Replies: 39
Views: 19074

Re: Radiation Belt Storm Probes (RBSP): The Electric Atmosph

Rob, thanks for the warning. I am only a first year Physics person myself. This line of questioning is meant for any experts of the the physics of Earth's outer atmosphere. Electrons do not move along a conducting wire, but set up vibrations that carry the energy through a conductor. Electrons trave...
by dougettinger
Sun Oct 28, 2012 8:12 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Van Allen Probes: Radiation Belt Storm Probes (RBSP)
Replies: 39
Views: 19074

Re: Radiation Belt Storm Probes (RBSP): The Electric Atmosph

Rob, I was only asking your opinion, your very own idea off the top of your head. You basically know general scientific principles. I wasn't asking that you consult a slew of journals and then exclaim your most educated answer. Do the electrons captured from the solar winds give Earth a slightly neg...
by dougettinger
Sun Oct 28, 2012 7:41 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Distribution of Oort Cloud objects
Replies: 14
Views: 3960

Re: Distribution of Oort Cloud objects

I have to be very careful what I say to the Guardian of the Codes. Yes, Owlice, I do have my own published version of solar and general star system formation that differs in many ways from the popular, accepted version. I have my own website where my published ideas exist, but I am not allowed to te...
by dougettinger
Sat Oct 27, 2012 3:21 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Distribution of Oort Cloud objects
Replies: 14
Views: 3960

Re: Distribution of Oort Cloud objects

Thanks, Chris. Now, I am the happy recepient of the true meaning of these two illustrations. I was truly mis-lead by the 2nd illustration. Wikipedia says, "Oort noted that there was a peak in the numbers of nearly isotropic comets with aphelia - their farthest distances from the Sun - of roughl...