The new observational O/Fe vs Fe/H relationship in halo dwarfs is analyzed in terms of a model of chemical evolution for the solar neighborhood. The role of...
The Earth as a benchmark: spectro-polarimetry unveils strong bio-signatures
One of the next most important goals of astronomy is the characterization of exo-solar planets and the search for extra terrestrial life. Traditional...
The Earth as an object of astrophysical interest in the search for extrasolar planets
The potential discovery of Earth-like planets around other stars will need, apart from a sophisticated technological development, the design of techniques for...
The amount of energy coming into the Earth's climate system is the combination of two parameters: solar constant, and Earth's albedo (or reflectance). Our main...
The Earthshine Project: Applications to the Search of Exoearths
To be able to detect a biosphere in an extrasolar planet, life in that planet should have been able to alter the original composition of the planetary...
The Earthshine Project: Measuring the earth's albedo. Latest results
Since December 1998, photometric observations of the bright and dark side of the Moon have been regularly carried out at Big Bear Solar Observatory, with the...