Thierry Corbard, of the Côte d'Azur Observatory (France), When will we understand the Sun's core? To understand the Sun's core we need to identify gravity modes that have not yet been fully detected. Although we can guess at the nature of these g modes, more observations and instruments are needed to improve the signal to noise ratio. Once detected, we can use the fact that these modes are sensitive to dynamic structures in the Sun's core to make some predictions about  its temperature and rate of rotation. We are also likely to gain some insight into neutrino physics. Jørgen Christensen

When scientists realised that observing and analysing oscillations in the Sun could provide information about its interior, it was only a matter of time before Helioseismology was put to work on other stars

When we look at the Sun we cannot penetrate beyond its outer surface, the photosphere, which emits the photons that make up the radiation we can see. So how can we find out what is inside it?

One hundred and fifty experts in Solar and Stellar Seismology from over twenty countries will converge on Lanzarote from the 1st to the 5th February for the 4th HELAS International Conference, organised by the Instituto de Astrofísica de Canarias (IAC)

ESA's Herschel Space Observatory was launched on 14 May 2009. After a short commissioning and performance verification period, the science demonstration observations started in September 2009. Herschel is now carrying out routine science observations. The three instruments (SPIRE, PACS and HIFI) are working extremely well. The IAC is part of the SPIRE and PACS instrument consortia and has contributed flying hardware and software. The first results of the many Herschel Key Projects were presented at the ESLAB 2010 symposium in ESTEC (May 2010) and have been published in July 2010 in a special

Recent observations of the rotation curve of M31 show a rise of the outer part that cannot be understood in terms of standard dark matter models or perturbations of the galactic disk by M31?s satellites. Here, we propose an explanation of this dynamical feature based on the in?uence of the magnetic ?eld within the thin disk. We have considered standard mass models for the luminous mass distribution, a Navarro?Frenk?White model to describe the dark halo, and we have added up the contribution to the rotation curve of a magnetic ?eld in the disk, which is described by an axisymmetric pattern