The Deep Impact mission was designed to have much of the mission-critial science done from Earth-based telescopes An unprecedent worldwide coordinated campaign was organized Many observatories around the world and in space observed the comet before during and after the impact to follow the effects of the event and its evolution The Roque de los

In order to better estimate the earth climatic variations at scales corresponding to decennia or centuries it appears more and more important to understand the internal origin of the solar magnetic cyclic activities together with the evolution of the internal solar rotation profile It is the only way to be able to predict how they will evolve in

From October 1999 to the present Chandra has taken nearly monthly snap-shot observations of M31. The first 3 years of this dataset in combination with deeper but less frequent XMM observations has allowed the detection of 45 X-ray transients within M31. By analogy to our Galaxy, many of these transients are likely black hole candidates. We have

We present a new calibration of the CaII triplet as metallicity indicator based in 4 globular and 11 open clusters which cover a range of metallicity - 2≤[Fe/H]≤+0.1 and age 13≤(Age/Gyr)≤0.25. We use it to derive the metallicity distribution in two fields situated at 5 and 8 degrees from the center of the LMC. We show that the mean [Fe/H] of the

MELiSSA Micro-Ecological Life Support System Alternative is a closed artificial ecosystem intended as a tool for the development of a bio-regenerative life support system for long-term manned missions i e planetary base For its study and implementation the MELiSSA loop has been divided in five interconnected compartments organized in three

Planetary nebulae (PNe) in the Magellanic Clouds (LMC, SMC) offer a unique opportunity to study both the population and evolution of low- and intermediate-mass stars in an environment which is free of the distance scale bias that hinders Galactic PN studies. The emission shown by PNe in the 5-40 μm range is characterized by the presence of a