We report the evolution of the cloud of aerosols produced in the atmosphere of Jupiter by the impact of an object in 19 July 2009 (Sánchez-Lavega et al., Astrophys. J. Lett, Vol. 715, L155. 2010). This study is based on images obtained with a battery of ground-based telescopes and the Hubble Space Telescope in the visible and in the deep near

Aims: Current and upcoming space missions may be able to detect moons of transiting extra-solar planets. In this context it is important to understand if exomoons are expected to exist and what their possible properties are. Methods: Using estimates for the stability of exomoon orbits from numerical studies, a list of 87 known transiting exoplanets

This work describes an elearning sequence for teaching geometry and astronomy in lower secondary school created inside the ITEMS (Improving Teacher Education in Mathematics and Science) project. It is based on results from the astronomy education research about studentsŠ difficulties in understanding elementary astronomical observations and models

The underlying ethos of Open Access is that the public should have the right to free access to the published results of all publicly funded academic and scientific research. Such has been the political success of OA campaigners that some funding agencies (e.g. Wellcome) now make OA publication of funded research a necessary condition for the award

We analyse the internal dynamics of star-forming H ii regions and their efficiency in interacting with the ISM. We have selected the nearby (4.5 Mpc) spiral galaxy M 83, and from GHαFaS Fabry-Perot observations of the central 3.4' × 3.4' region, extracted the integrated Hα emission-line profiles of a sample of 136 isolated H ii regions. We

Context. Transit search programs such as CoRoT and Kepler now have the capability of detecting planets as small as the Earth. The detection of these planets however requires the removal of all false positives. Although many false positives can be identified by a detailed analysis of the light-curves (LCs), the detections of others require