The primordial "f_NL" non-Gaussianity, and perturbations beyond the present horizon
The primordial abundance of 4He: evidence for non-standard big bang nucleosynthesis
The Primordial Curvature Perturbation from Vector Fields of General non-Abelian Groups
The Primordial Inflation Explorer (PIXIE): A Nulling Polarimeter for Cosmic Microwave Background Observations
The Primordial Lithium Problem
The primordial non-Gaussianity of local type (f_NL) in the WMAP 5-year data: the length distribution of CMB skeleton
The PRIsm MUlti-Object Survey (PRIMUS) I: Survey Overview and Characteristics
The Probability Distribution for Non-Gaussianity Estimators
The probability distribution for non-Gaussianity estimators constructed from the CMB trispectrum
The Problem of Inertia in Friedmann Universes
The processing of radiation by dust in galaxies
The Progenitor of Supernova 2011dh/PTF11eon in Messier 51
The progenitors of present-day massive red galaxies up to z {\approx} 0.7 - finding passive galaxies using SDSS-I/II and SDSS-III
The Progenitors of Type Ia Supernovae: II. Are they Double-Degenerate Binaries? The Symbiotic Channel
The Promise of Low-Frequency Gravitational Wave Astronomy
The propagation of uncertainties in stellar population synthesis modeling II: The challenge of comparing galaxy evolution models to observations
The propagation of uncertainties in stellar population synthesis modeling III: model calibration, comparison, and evaluation
The properties of a large sample of low surface brightness galaxies from SDSS
The properties of Brightest Cluster Galaxies in the SDSS DR6 adaptive matched filter cluster catalogue
The Properties of Fossil Groups of Galaxies