The Pioneer-Venus program has been successful - Overview of preliminary results
The Pipe Nebula: A Young Molecular Cloud Complex
The Piranha algebraic manipulator
The Pisgah Astronomical Research Institute
The PITA System: Tabling and Answer Subsumption for Reasoning under Uncertainty
The pitch-angle anisotropy of solar protons according to stratospheric measurements
The pitfalls of verifying floating-point computations
The pixon and Bayesian image reconstruction
The placement of the Trans-European Suture Zone on the Romanian territory by electromagnetic arguments
The Plains and Lineaments of Dione
The Planck Mission
The Plane-Width of Graphs
The Planet discovered at Lowell Observatory.
The Planet Observer's Handbook
The planet Saturn
The Planet-A Halley encounters
The Planet-B neutral gas mass spectrometer
The Planetary Boundary Layer above a Change in Surface Roughness.
The Planetary Fourier Spectrometer (PFS) for the orbiter of the spacecraft Mars 96
The Planetary Geology Intern Program (abstracts)