Astronomy and Cosmology

help again. It dosn't seem to clear to me. Thankx

There seems to be a lot of threads discussing dark energy and dark matter, but non about how, in what way, space is expanding. (Or have I missed someone ?) When space expands, is it known if the space is streatching or new space is inserted ?

i had to write a senior exit project for school...this is my paper (and its the first draft still, i should have the 2nd draft due in about a week)...could anyone give me any feedback or ideas on the paper? Thanx to anyone who can help Part of Something Bigger: The Universe Within In the history of the collective as in the history of the individual, everything depends on the development of consciousness. --Carl Jung The whole of life lies in the verb seeing. --Teilhard de Chardin There are many strange theories about our universe. One is that one single string holds the universe and all other universes together. Another is that we are noth…

I'm pretty sure that photons mediate the gravitational force now. Does anyone disagree? He was wondering about how it is that the universe can expand, and take the matter along with it... inquiring into the method through which space couples to matter. But a true vacuum can not ever couple to matter. So, he made me think about what really is responsible for the gravitational force. I know it's not action at a distance. Or I should say,"It isn't instantaneous action at a distance." If the sun suddenly stopped existing, we here simultaneous to that, would still follow an elliptical path around the place in the solar system, which is the center of in…

Thought this was interesting. Anyone for input? http://news.yahoo.com/news?tmpl=story&u=/ap/20050419/ap_on_sc/liquid_surprise_4

In the cyclical cosmology hypothesized within the framework of M-theory time is still highly asymmetrical. I was wondering if time reversal symmetry had truly shown to be broken experimentally or if there could exist reflection points around which time itself is symmetrical, creating a cyclical cosmology with perfect symmetry in all dimensions.

Yesterday I read a book, in my language, called "COSMOS a short history" with the original title "A brief history of time" by Stephen W. Hawking 1988. The book is mostly a history of the progress of science, with parts of self-biography and some cosmological ideas of him for the general puplic. I got stuck already on page 17 where Hawking implies there is a center of mass of the Universe. (At least in a infinite Newtonian Steady State Universe.) I don't intend to discuss if the Universe has a center of mass or not, just what Hawking implies or not. What I want to know if this prof, (math ?), exists or if Hawking is just over-simplifying in a way such it fa…

What is the degree variation between Map North and True North and how can one tell if a map is accurate? If this is not a good place for this question, where should I post it instead?

In 2007 NASA will launch a spacecraft named Kepler which will search for extra- solar planets it's telescope can scan 100,000 stars every 15 minutes if a planet passes in front of the star it's brightness will dip & kepler will detect it. Scores of extra-solar planets have been found already,but are gas giants like Jupiter.Kepler will be able to detect small Earth like planets....

I am curios how and when light defuses or stops, By this i mean is the light from the sun continue to go untill the edge of the universe (using this as an example not wanting to discuss the edge of the universe). Pleese explain in some detail.

i am going to build a telescope,as i live very close to the sea the telescope would mostly be used for water viewing,even though a spotting scope would be all i would need i am very keen to build a refractor out of brass tube being a retired plumber i have all the tools and knowlege to work with brass. having never built a telescope the only ideas i have come from the web .i was thinking under the lines of a 83mm achromatic objective lense with a 900mm focus with a 1.25" *40 kellner eyepiece does this sound like a good idea ??? any advice from you people who would know would be more than welcome. thanks in advance sol

I was just wondering if anyone had any ideas on how one could create a telescope may it be radio or optical??

And does it only work if their orbital plane is almost exactly edge-on as seen from Earth?

I have a theory on pertaining to Dark Matter and that might have some merit. The document is available online at http://www.dynarama.com/Whirlpool Space-Time Distortion.doc Here is the text of it: April 11, 2005 Whirlpool Space-Time Distortion: Another facet of General Relativity Offering insight into the motions of massive spinning systems The greater the mass and spin-speed of a system, the less its centripetal forces are oriented with respect to the universe as a whole. The fabric of space-time becomes more tightly coupled to a spinning body as the mass of the body increases, causing a whirlpool in the fabric of space-time. As space-time begins to…

i was recently reading a book called 'The Universe In A Nutshell' by: Steven Hawking. He said that the universe DOES end somewhere. He knows this because if the universe was infinit then that means everywhere we look there would be a star, and the night sky would be as bright as the sun. so in other words if the universe went on forever then there would be a star EVERYWHERE we look. But there isnt. So the universe must end at some point

I was thinking; if the lochness monster does exist could she or her family be survivors from the KT boundary? & maybe there could be other water reptiles still living from that period; but what I do find hard to accept there has never been an attack on man or it's craft in dear old Lochness.. 'presuming all these creatures' I would have thought to be predatory, the reason I put this post here if by some means the story is true & other survival of creatures from that period have survived... wouldn't it be amazing if that huge metorite didn't wipe all the Dinos out afterall?....us.2u

If the theory of a rock the size of mars smashing into our earth and creating our moon is true, the earth could have somehow regenerated?? it is possible, but the earth would have had to have a core that still radiated fresh from the big bang?? I am working on a project and i am looking for help via E-mail. if anybody would want to help me with my project, send an e-mail to: harrison_cooldude@hotmail.com. if you have any objections, please notify me! don't click on this because you will get a pop-up for my mom's e-mail.

Hello! Skimmy here with more rediculous theories! Ha! Here ya go: OK, so formula for c= (Uo*Eo)^(-1/2) (Uo and Eo represent permittivity and permeability constants.) Now, since Eo and Uo are constants, the speed of light was able to be derived. However, I've reasoned that if "c" was a limit, not just in the literal term but also in the mathematical term, then Eo and Uo must also be limits. If so, then maybe that opens up new ways to abuse E/M for the purposes of FTL propulsion...so, whaddya think?

Here's some very useful paper i found which corrects the mistakes made in Lerner's plasma cosmology in favor of the ΛCDM model and standard big bang cosmology. http://www.evolutionpages.com/big_bang_no_myth.htm I guess the ΛCDM will remain of top until 2007-2008 LHC experiment which should confirm the existence of the Higgs boson and other supersymmetric particles. I guess that the only good argument against the big bang cosmology is that some redshifts might be intrinsic or that the Friedmann equation might not be reliable at late times.

Special relativity sais that no physical signal (or no energy) can pass through space faster than light. This means that a peak can move faster than light speed (Four billion km/h) but the total energy of the pulse does not. Therefore Einstein's relativity is preserved and causality is not violated. Signals also get weaker and more distorted the faster they go, so in theory no useful information can get transmitted at faster-than-light speeds. But if so why is it said (within the context of general relativity which generalizes special relativity) that space itself can expand 50 times the speed of light? Is it possible that the distance between two objects is so great…

I was just reading up on the Slingshot effect, and was wondering where the energy comes from for the increased velocity of the "slingshotted" object? Cheers Sarah

It states in a book that I am redaing the Jupiters winds flow in a particular direction. But at the end of it there is a question (in which direction does Jupiters atmosphere flow?) is there a real difference or are they both the same? Thanks.

I don't know much about about science, the humanities have always been my field, so if someone could explain this to me simply that would be great: How is one supposed to be able to translate the Plaque on Pioneer 10 & 11 by understanding the "Hyperfine Transition of Hydrogen"?

help again.

thanks.