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#21
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In article , Bill C.
wrote: Phyloe, My coffee cup and I think you're absolutely right. We're mostly Northern Hemispherers making up the rules of the world. Its kind of natural when everyone around you has the same bias to see it as a principle. Bill C. "Phyloe" wrote in message ... Doesn't it depend on how you are looking? Take a can of soup. Look at one end and turn it counter clockwise. While doing this flip the can end for end. You will find the other end spinning clockwise. Phyloe "Bill Duncan" wrote in message et... Except for Venus and Uranus,why do the rest of the planets including the sun and even our own galaxy spin counter clockwise?Thanks,Bill. When I included our galaxy,I was using all of the artists' concepts showing what our galaxy might look like if viewed from above and where we are located in it.I know we see it from the edge.I also know our galaxy is considered to be a spiral one.So can you tell me how an astronomer can determine the shape of our own galaxy froom an edge on view.Thanks,Bill. |
#22
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Bill Duncan wrote:
When I included our galaxy,I was using all of the artists' concepts showing what our galaxy might look like if viewed from above and where we are located in it.I know we see it from the edge.I also know our galaxy is considered to be a spiral one.So can you tell me how an astronomer can determine the shape of our own galaxy froom an edge on view.Thanks,Bill. Mainly by mapping stars. Different kinds of objects occur in different distributions in space, allowing astronomers to trace out various features of the galaxy. The spiral arms are characterized by young "Population I" stars, galactic star clusters, and diffuse nebulae (bright and dark), so when these objects are plotted -- somewhat tricky because the distances to most of them can only be estimated -- the positions of the arms, at least in our quadrant of the galaxy, can be mapped out. The centre of the galaxy is obstructed from our view, but instruments capable of imaging radio and infrared frequencies that pass through the intervening dust and gas can provide a picture of the hub. See http://www.anzwers.org/free/universe/5000lys.html. -- Odysseus |
#23
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Bill Duncan wrote:
When I included our galaxy,I was using all of the artists' concepts showing what our galaxy might look like if viewed from above and where we are located in it.I know we see it from the edge.I also know our galaxy is considered to be a spiral one.So can you tell me how an astronomer can determine the shape of our own galaxy froom an edge on view.Thanks,Bill. Mainly by mapping stars. Different kinds of objects occur in different distributions in space, allowing astronomers to trace out various features of the galaxy. The spiral arms are characterized by young "Population I" stars, galactic star clusters, and diffuse nebulae (bright and dark), so when these objects are plotted -- somewhat tricky because the distances to most of them can only be estimated -- the positions of the arms, at least in our quadrant of the galaxy, can be mapped out. The centre of the galaxy is obstructed from our view, but instruments capable of imaging radio and infrared frequencies that pass through the intervening dust and gas can provide a picture of the hub. See http://www.anzwers.org/free/universe/5000lys.html. -- Odysseus |
#24
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In the explanation I've read about our Moon's tidal lock, it was said the
moon, being not solid at its core, developed a bulge at its edge closest to the earth, and the eccentricity of that spinning leading edge caused the moon to slow over time until its spin was locked with that its monthly rotation period around the earth. Now the thing that makes Venus unique that I know about, besides its close size and spin roughly equal to our year is that it is the hottest planet due to its high gas atmosphere trapping the heat. That being the case, I'm wondering if that could mean its liquid center has cooled much more cooly than either the earth or smaller mercury, hence its individual ability to lock with the sun. If that's what happened. Here I sit, ready for the fatal bolts of logic and higher learning! Bill C. "Jonathan Silverlight" wrote in message ... In message , Ugo writes "Bill C." wrote in message ... "Llanzlan Klazmon The 15th" wrote in message 7.6... Bill Duncan wrote in et: The original intrinsic angular momentum of Venus was lost due to tidal locking and its' current situation may be a resonance effect. Do we know what it tidal locked with? The sun? I'm also curious. Isn't tidal locking to the Sun a bit unreasonable at the distance Venus is? Let's leave Earth alone because it also has another tidal companion and let's take our neighbor. Why wasn't Mars, some 2 times farther from the Sun than Venus also slowed down drastically? I'm more inclined to say that a large impact during Venusian history severely disrupted its rotational axis and period, but I'm no expert at this. Nor am I, but I gather that the theory about a large impact has been joined by the new one, which says there was some sort of interaction between Venus' atmosphere and the solar wind. On the subject of tidal effects, there's also the may-be-coincidental relationships between Venus' orbital and the Earth's year. -- "Forty millions of miles it was from us, more than forty millions of miles of void" Remove spam and invalid from address to reply. |
#25
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In the explanation I've read about our Moon's tidal lock, it was said the
moon, being not solid at its core, developed a bulge at its edge closest to the earth, and the eccentricity of that spinning leading edge caused the moon to slow over time until its spin was locked with that its monthly rotation period around the earth. Now the thing that makes Venus unique that I know about, besides its close size and spin roughly equal to our year is that it is the hottest planet due to its high gas atmosphere trapping the heat. That being the case, I'm wondering if that could mean its liquid center has cooled much more cooly than either the earth or smaller mercury, hence its individual ability to lock with the sun. If that's what happened. Here I sit, ready for the fatal bolts of logic and higher learning! Bill C. "Jonathan Silverlight" wrote in message ... In message , Ugo writes "Bill C." wrote in message ... "Llanzlan Klazmon The 15th" wrote in message 7.6... Bill Duncan wrote in et: The original intrinsic angular momentum of Venus was lost due to tidal locking and its' current situation may be a resonance effect. Do we know what it tidal locked with? The sun? I'm also curious. Isn't tidal locking to the Sun a bit unreasonable at the distance Venus is? Let's leave Earth alone because it also has another tidal companion and let's take our neighbor. Why wasn't Mars, some 2 times farther from the Sun than Venus also slowed down drastically? I'm more inclined to say that a large impact during Venusian history severely disrupted its rotational axis and period, but I'm no expert at this. Nor am I, but I gather that the theory about a large impact has been joined by the new one, which says there was some sort of interaction between Venus' atmosphere and the solar wind. On the subject of tidal effects, there's also the may-be-coincidental relationships between Venus' orbital and the Earth's year. -- "Forty millions of miles it was from us, more than forty millions of miles of void" Remove spam and invalid from address to reply. |
#26
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In article , Odysseus
wrote: Bill Duncan wrote: When I included our galaxy,I was using all of the artists' concepts showing what our galaxy might look like if viewed from above and where we are located in it.I know we see it from the edge.I also know our galaxy is considered to be a spiral one.So can you tell me how an astronomer can determine the shape of our own galaxy froom an edge on view.Thanks,Bill. Mainly by mapping stars. Different kinds of objects occur in different distributions in space, allowing astronomers to trace out various features of the galaxy. The spiral arms are characterized by young "Population I" stars, galactic star clusters, and diffuse nebulae (bright and dark), so when these objects are plotted -- somewhat tricky because the distances to most of them can only be estimated -- the positions of the arms, at least in our quadrant of the galaxy, can be mapped out. The centre of the galaxy is obstructed from our view, but instruments capable of imaging radio and infrared frequencies that pass through the intervening dust and gas can provide a picture of the hub. See http://www.anzwers.org/free/universe/5000lys.html. I want to thank everyone for their input.Bill. |
#27
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In article , Odysseus
wrote: Bill Duncan wrote: When I included our galaxy,I was using all of the artists' concepts showing what our galaxy might look like if viewed from above and where we are located in it.I know we see it from the edge.I also know our galaxy is considered to be a spiral one.So can you tell me how an astronomer can determine the shape of our own galaxy froom an edge on view.Thanks,Bill. Mainly by mapping stars. Different kinds of objects occur in different distributions in space, allowing astronomers to trace out various features of the galaxy. The spiral arms are characterized by young "Population I" stars, galactic star clusters, and diffuse nebulae (bright and dark), so when these objects are plotted -- somewhat tricky because the distances to most of them can only be estimated -- the positions of the arms, at least in our quadrant of the galaxy, can be mapped out. The centre of the galaxy is obstructed from our view, but instruments capable of imaging radio and infrared frequencies that pass through the intervening dust and gas can provide a picture of the hub. See http://www.anzwers.org/free/universe/5000lys.html. I want to thank everyone for their input.Bill. |
#28
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Is our universe rifght handed or left handed ? Bert
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#29
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Is our universe rifght handed or left handed ? Bert
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#30
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"G=EMC^2 Glazier" wrote in message...
... Is our universe rifght handed or left handed ? Bert Bert, since our Universe appears to have vastly more matter in it than antimatter, it is called "right-handed." A universe that is mostly antimatter would be "left-handed." (apologies to Gentle Southpaw Readers everywhere!) happy days and... starry starry nights! -- Do you have yourself a dream? Are you burning with desire? If no dream, you have no steam To fan your ember into fire! Do you have yourself a dream? Paine Ellsworth |
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