As both moderators of s.a.r. are travelling for parts of August, it is possible that there will be some delay in posting new articles, particularly in the...

Is there a very general equation(s?) for calculating the gravitational potential experienced by each member of a pair of roughly equal masses (stars or...

Hi, I would like to discuss a hypothesis that the spectroscopically undetectable dark matter is actually Big Bang nucleosynthetic adiabatically...

hi, i was sorta referred to here from sci.physics.research... assuming you have a broadband radio telescope in space or on the moon, and you are pointing it...

Mainly based on the results of the Huygens probe and the radar sensing by Cassini, an image of the physical world of Titan has been developed. Often analogies...

NY Times reported they had a big announcement for today (Tuesday). What happened? Did they want to wait till after Obama's speech or did the Times just get it...

The MILLIQUAS (Million Quasars) catalogue v2.0 is now available, it presents all quasars/AGN/Bl Lacs published / accepted to 12 June 2010, including...

Just when you thought your cosmological assumptions were rock...

On Fri, 11 Jun 10, "Robert L. Oldershaw" wrote: An international team of astrophysicists has identified "five new possibly irreconcilable problems" for the...

Hello Group! Unquestionably the most interesting reference covered by ACG monthly notes for May 2010, (link;...

My thanks to various posters who have given me a figure for the density of CDM. You have now really convinced me that the theory of CDM must in all likelyhood...

We hear a lot on the "Dark Matter" subject. But I must confess that I have yet to see any good arguments explaining just WHY "Dark Matter" avoids the visible...

I have claimed in several recent newsgroup posts, and elsewhere, that there is credible evidence that the dubious marriage of theoretical particle physics and...

NASA (JPL) publishes a press release about this cluster of galaxies that is 9.6 billion years away. In the press release NASA points out that it is a VERY...

Just in from the Herschel team: http://arxiv.org/PS_cache/arxiv/pdf/1005/1005.3115v1.pdf . " during the science demonstration phase of Herschel discovered...

Hi everyone, does someone know a reference of a detailed measure for the star formation rate versus z in our Galaxy? I looked to Cignoni 2009, but his data are...

An interesting review article on microlensing of quasars, by Schmidt and Wambsgans, can be read at the following link to a preprint scheduled for publication...

Ref: The intergalactic magnetic field constrained by Fermi/LAT observations of the TeV blazar 1ES...

A interesting new development, or potential development, on the dark matter front comes from a new paper by Mike Hawkins, which is in press at MNRAS. Hawkins'...

I assume for now that there are so many they can't publish fast enough, but enough time has passed to be able to detect Mercury-like planets with 90 day...