We analyse the new ISCCP (International Satellite Cloud Climatology Project) D2 cloud data to ascertain if a connection between cosmic-ray flux and cloud cover...

This book contains the lectures delivered at the XIII Canary Islands Winter School of Astrophysics, which reviewed current knowledge about the origin and...

The chemical composition of the Universe has evolved over billions of years. A host of astrophysical processes and observations must be understood in order to...

"CosmoLAB" is an educational project with the goal of bringing Astronomy and, in particular, the practice of astronomical observation, closer to the educational...

Not Available

Not Available

The determination of the fundamental cosmological parameters has achieved dramatic progress over the past few years. Using Cepheids and secondary distance...

A class of spatially flat models with a cosmological constant and a primordial broken scale invariant (BSI) spectrum of adiabatic perturbations is confronted...

The authors review briefly the observational status of abundance determinations for those elements produced in the first seconds of a "standard" Big Bang...