Ricardo Hueso

TL;DR: In this paper, the formation and viscous evolution of protoplanetary disks is modeled as the result of the gravitational collapse of an isothermal molecular cloud, and two parameterizations of turbulence are proposed: the classical α representation and a β parameterization, representative of non-linear turbulence driven by the keplerian shear.

TL;DR: The Mars 2020 mission will seek the signs of ancient life on Mars and will identify, prepare, document, and cache a set of samples for possible return to Earth by a follow-on mission as discussed by the authors.

TL;DR: The Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) on board the ESA/Venus Express mission has technical specifications well suited for many science objectives of Venus exploration as mentioned in this paper.

TL;DR: Observations from multiple Earth-based observatories of Haumea passing in front of a distant star (a multi-chord stellar occultation) report the presence of a ring with an opacity of 0.5, which constrains the three-dimensional orientation of Haumesa and its triaxial shape, which is inconsistent with a homogeneous body in hydrostatic equilibrium.

TL;DR: In this paper, the authors present zonal and meridional wind measurements at three altitude levels within the cloud layers of Venus from cloud tracking using images taken with the VIRTIS instrument on board Venus Express.