Hi everyone, My first post to the group. Can someone explain the concet pf comoving distance and comoving volume? How do I understand them physically (i.e....

The article in Nature Vol 352 2 June 2005/doi:10,1038/nature03597 page 629-636 by Volkel Springel etc highly interests me, partly because of its very...

In article , Rob Seaman wrote: On July 4th, the International Earth Rotation Service (IERS)...

I have revised the introduction to this. Any comments? Does a Teleconnection between Quantum States account for Missing Mass, Galaxy Ageing, Supernova...

I might describe this post as a pre-preprint. I have not yet sent it anywhere, and would like to get comments and criticisms before I do. Title Does a...

Several previous posts indicate that readers of s.a.r. include a fair number of IRAF users. I have become aware that an internal NOAO memo is suggesting that...

In article , Jonathan Thornburg -- remove -animal to reply wrote: In sci.astro.research...

In sci.astro.research Rob Seaman wrote: On July 5th, the head of the Earth Orientation Center of the IERS, Daniel Gambis, made the first...

On July 4th, the International Earth Rotation Service (IERS) announced that the first leap second in seven years will be issued at the end of December...

Hello, I'm searching for star forming simulation video's. Can anybody give some hint or url? I've searched the Web, found galaxy collide video's but no star...

Astronomy Hub - The International Astronomy and Space Forum Community -- http://astro.jconserv.net We are featuring and covering the Deep Impact event in our...

I want to find out in what period the spiral arms of galaxies similar to ours rotate. I am *not* interested in how fast the matter rotates, but the appearance...

Is it possible to plot a rough approximation of the rate of for- mation of black holes in the universe over cosmic time? I'm referring really to the formation...

Hello, as a layman I'm interested in the universe. My question is: If I shoot (by an imaginairy explosion) an imaginairy galaxy system X from Earth into...

Hi guys! I have a question about isophotal wavelength for a star. I have clear the idea that given a stellar spectra F(l), the spectral response of a filter...

Hello, as a non-astronomer I would like to find articles or a book in which the fundamentals of the big bang are explained for layman's in a logical...

Hi there, I got a doubt about the 2mass magnitude system. It's known that 2mass is in Vega system, but what does this actually mean?? I know that according...

I am curious about one aspect of the Dark Matter issue. Basically the argument is that there is more matter evident by the movement of the galaxies and such...

Is there any rational explanation as to how matter came to be in the first place? I seem to remember reading that matter can be created from nothing more than...

The observations so far have prooved that light can bend. We are observing the light from stars which are too far away from the earth. These days I am having...