http://neo.jpl.nasa.gov/risk/2003qo104.html I ain't gonna make any big deal about this 2.4 km asteroid having a couple of Torino Scale 1's on its risk...

Hi - I'm trying to design an instrument to measure atmospheric turbulence using transmissions from a 1550 nm laser and a common consumer telescope, and can't...

Hello group, I have theories concerning concept of field, mass, space and time and relativity of motion. It would be perhaps inappropriate to try to put it...

Hi everyone - I'm looking for web references that explain the physics behind the different shapes of SN light curves obtained when performing photometric...

I read a couple of papers about stellar classification in which classification results were reported not in terms of error rate, as it is usually done in...

I am quite sure that Martin is more than capable of fighting his own corner however if Michael did his research properly he would know that Martin doesn't...

Yes, it's time to ask some inane layperson's questions again... :-) I'm now wondering how gravitational lensing can conspire to (apparently) _not_ be...

On seeing the Hubble pictures of the "Red Rectangle", e.g. at url: http://www.esa.int/export/esaCP/SEMHBNGHZTD_FeatureWeek_0.html, it occurred to me that...

ESA (European Space Agency): url: http://www.esa.int/export/esaSC/SEMYZ09YFDD_sensations_1.html#subhead1 "This sequence of pictures from May to December...

] Hi, you experts! ;-) I stumbled over this Mars Global Surveyor photo, url: http://www.msss.com/moc_gallery/m07_m12/images/M09/M0902042.html "MOC...

It's possible I asked about this once before, but I stumbled across this again and once again I fail to understand it, so if some experts could be kind enough...

-----BEGIN PGP SIGNED MESSAGE----- # They showed a photographer, Jock Sturges, and some of his unpublished # photos, and said the FBI confiscated...

Hello All, Please reduce my level of ignorance. I am not a physicist, but I am a mathematician. (number theorist). I can deal with tensors. And...

Can someone point me to a good explanation of this method ? I.e. by analysing lensing effects in a galaxy cluster, it is possible to map the distribution of DM...

Hi, when i run coadd program in idl which is used to coadd different spectra, it is stoping at !iuer.dat and tells system variable not recognised. should i...

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...

Hartmann/Davis/Cameron/Ward hypothesis of the moon's origin: http://www.psi.edu/projects/moon/moon.html http://www.spacedaily.com/news/life-01x1.html .....is...

Does anyone know of any programs that can produce plots of resonant angle for non-trojan asteroids that are in a resonance, such as Hildas, Thule and Plutinos?...

A paper to appear in a scientific journal is raising eyebrows, claiming a strange red rain may have recently brought cells from space to Earth. (Article in...

How does Relativity account for the stability of the planetary orbits if the speed of gravity is not inifinite, as in Newtonian Dynamics?