Astronomy and Cosmology

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.

Help

Thanks.

Is it east to west in the in the dark belts and west to east in the pale zones?

Hey its my first post,so be nice. Have anybody here heard of 'world jump day'. The guy claims that iff 600 milion people jump simultaneously the worlds orbit will change ..... What's your opinion? World Jump Day

http://www.space.com/scienceastronomy/050401_first_extrasolarplanet_pic.html they have been watching it since 1999 and the separation from the star has not changed at all so finally today they say it is "confirmed" we have all seen photos in the past few years of things that PROBABLY are planets, next to their stars, but those things they are still watching to see if they move together with the star for long enough for them to be sure they are planets and not just some other object in the background this "confirmed" planet at GQ Lupi is not interesting as a place to live. it is far from its star, 3 times the distance of sun to Neptune, and it is ve…

Help please!

Help again please!

I want to know if the photons which the sun emits, are responsible for the path of earth's orbit around it. The sun is for certain emitting photons, and they must leave the sun at a speed 299792458 meters per second relative to the sun. They are emitted in many directions, roughly in a spherical shape. So the region of space surrounding our massive sun, is filled with the photons which the sun is sending out. So could these photons be solely responsible for the orbital path's of the planets? Thank you PS: If the answer is yes, then the speed of gravity is c.

http://antwrp.gsfc.nasa.gov/apod/ap050401.html APOD obviously having a little fun with the date.

Mass of moon is 1/81 Earth's mass Gravity of moon is 1/6 Earth's gravity WHY!

To what extent do the CMB and the Hubble expansion define a preffered reference frame?

In another thread, which is now closed, swansont said this:

Please answer the following question only if you are sure of the answer 'What is the speed of gravity in miles per second?...us.2u

see this short movie made from timelapse shots of Crab http://chandra.harvard.edu/photo/2002/0052/combinedmovie_sm.mov here are other movies of Crab http://chandra.harvard.edu/photo/2002/0052/movies.html advise you select the low resolution version so it takes less time to download and let the download happen in the background while u do something else. it takes several minutes but then u can come back and play it "This movie shows dynamic rings, wisps and jets of matter and antimatter around the pulsar in the Crab Nebula as observed in X-ray light by Chandra (left, blue) and optical light by Hubble (right, red)."

Hi, I was wondering if anyone knew how cold complete coldness is? Is it measurable? eg its 36 degrees celsius where i'm at at the moment. If I was to zoom straight up beyond the atmosphere, it would be pretty cold but the temperature would still be affected by the sun. If I was then to zoom off out into space well beyond all the stars created by the big bang to a totally isolated spot that is not touched by any light or energy, so you cant see any stars ect, complete black. How cold would it be? Is this known? Thanks for any info

according to the standard picture space started out full of hot plasma and about 380,000 years from the start of expansion it cooled enough to become largely transparent neutral gas. the CMB dates from that moment when the material filling space became transparent. the photons from that moment are still traveling [side comment: if space were finite (analogous to the surface of a balloon) and small enough then some of them might have been around once already and be coming around again. but I dont think that's very likely. even if it is finite most astronomers think space is too large for that to have happened] anyway all space is filled with the CMB light which…