Progressive aqueous alteration of CM carbonaceous chondrites

Progressive Silicification of Iron Microbes — Preliminary Observations from a Two Year Experiment

Project Daedalus - The navigation problem

Project EFIGI: Automatic Classification of Galaxies

Project for Automatic Search for Morphological Type of Galaxies

Project Galileo: Recognition of the planet Jupiter and its moons

Project PHOENIX SETI Observations at Parkes

Project Phoenix: the Australian deployment

Project Radioastron

Projected and intrinsic shapes of galaxy clusters

Projected changes in the Caspian Sea level for the 21st century based on the latest AOGCM simulations

Projected temperature changes along the American cordillera and the planned GCOS network

Projective maximal families of orthogonal measures with large continuum

Projective Stationary Sets and Strong Reflection Principle

Prolongations in differential algebra

Prolonged history of episodic fluid flow in giant hematite ore bodies: Evidence from in situ U Pb geochronology of hydrothermal xenotime

Prolonged Ponding Episode in C-Newton Crater in Recent Geological Times on Mars

Prolonged residence times for the youngest rhyolites associated with Long Valley Caldera: 230Th-238U ion microprobe dating of young zircons

Promoting Dark Skies Awareness Programs Beyond the International Year of Astronomy 2009

Promoting mental model building in astronomy education