Perseid meteor stream : cross and longitudinal structures from radar observations

Perseid Meteor Stream as Observed in 1993

Perseid Meteors in July 1592

Perseid Meteors in July 1592

Persistence and change in the soft X-ray spectrum of the quasar PG 1211 + 143

Persistence and Variability of Large-Scale Longitudinal Structure in the Io Plasma Torus

Persistence in the WFC3 IR Detector

Persistence of the planetary wave type oscillations in foF2 over Europe

Persistency-field Eh-pH diagrams for sulfides and their application to supergene oxidation and enrichment of sulfide ore bodies

Persistent Accreting Neutron Stars in the INTEGRAL Galactic Plane Survey

Persistent Accreting Neutron Stars in the INTEGRAL Galactic Plane Survey

Persistent anomalous inclinations recorded in the Koolau volcanic series on the island of Oahu (Hawaii, USA) between 1.8 and 2.6 Ma

Persistent features of polarity transition records from western North America

Persistent Longitudinal Variations of Plasma Density and DC Electric Fields in the Low Latitude Ionosphere Observed with Probes on the C/NOFS Satellite

Persistent Peridicities in the Solar Wind and Photospheric Magnetic Field Coherent Structures

Persistent summertime water ice deposits in the northern plains of Mars: Observations from MRO CRISM

Persistent tremor within the northern Costa Rica seismogenic zone

Personal Equation of Astronomical Observers

Perspective radio system for the general investigation of the solar wind structure and dynamics

Perspective: Gravitational waves: ``Invited article: CO2 laser production of fused silica fibers for use in interferometric gravitational wave detector mirror suspensions'' [Rev. Sci. Instrum. 82, 011301 (2011)]