Preliminary estimates of nucleon fluxes in a water target exposed to solar-flare protons: BRYNTRN versus Monte Carlo code

Preliminary Mapping of Permanently Shadowed and Sunlit Regions Using the Lunar Reconnaissance Orbiter Camera (LROC)

Preliminary orbit determination using satellite-to-satellite limited range and range-rate data

Preliminary photomaps of Venus surface in the Maxwell Mountains and adjacent areas

Preliminary Results From a Three-dimensional Numerical Simulation of Compositional Convection in the Earth's Fluid Core

Preliminary results of the Cerenkov EAS flashes the Crimean Astrophysical Observatory

Preliminary solutions for the lunar gravity field from analysis of lunar orbiter tracking data

Preliminary validation of computational procedures for a new atmospheric ionizing radiation (air) model

Preliminary WFC3 UVIS PSF Evaluation

Preparation and testing of a space navigation experiment for the image-forming high energy x ray astronomy, using a rotation modulation collimator: Data transfer and data processing

Preparing New Polar Researchers to Lead the Next International Polar Year

Pressure distribution at the inner boundary of an astropause caused by a compressible stellar wind

Pressure Effects on Product Channels of Hydrocarbon Radical-Radical Reactions; Implications for Modelling of Planetary Atmospheres

Pressure Effects on Product Channels of the Allyl Radical Reactions; C3H5+C3H5 and C3H5+CH3

Pressure gradient torque in a non-axisymmetric accretion

Pressure gradient torque in highly supersonic nonaxisymmetric accretion

Pressure shocks in relativistic viscous heat-conducting fluids

Pressure- and chemistry-dependent electron-capture radioactive decay of 7Be, 22Na and 40K in crystalline materials

Pressure-induced absorption in the infrared - A data base for the modelling of planetary atmospheres

Pressure-volume-temperature relations in MgO: An ultrahigh pressure-temperature scale for planetary sciences applications