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• Pace University (NY) (1)
• Pacifica (1)
• Pacifica Graduate Institute (1)
• Pacific Science Center (3)
• Pacific Union College (1)
• Padova University (1)
• Parc Astronomic Montsec (1)
• Paris Observatory (2)
• Particle Physics and Astronomy Research Council (1)
• Passion for Inquiry (1)
• Paul Sykes Primary School (1)
• Pennsylvania State University (13)
• Pennsylvania State University (PA)||Arcadia University (PA) (1)
• Pennsylvania State University (PA)||Arcadia University (PA)||Colonial Middle School (1)
• Phiekpaideutiki Etaircia (1)
• Physics Department, ICEx, UFMG (1)
• Physics Department, Universiti Kebangsaan Malaysia (1)
• Pierre Auger Observatory (1)
• Pisgah Astronomical Research Institute (1)
• Pitesti University (1)
• Pittsburgh University (1)
• Planetário da Universidade Federal de Goiás (2)
• Planetário do Pará (1)
• Planetario Galileo Galilei (1)
• Planetario Malargue (1)
• Plan´etarium de Montpellier (1)
• Planetarium de Montpellier (1)
• Planetarium Institute, California State University, San Francisco (1)
• Planetarium Science Center (1)
• Planetary Institute of Toronto (1)
• Planetary Science Institute (14)
• PlaneWave Instruments (2)
• Plymouth-Whitemarsh Joint School (1)
• Polaris OPP Association (1)
• Pomona College Department of Physics and Astronomy (1)
• Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) (1)
• Portland State University (3)
• Pós Graduação Interunidades em Ensino de Ciências, USP (2)
• Poudre School District (1)
• PPGECT/Universidade Federal de Santa Catarina (1)
• Presidio Graduate School (1)
• Programa de Pós-graduação em Educação – UFF (1)
• Provence Sciences Techniques Jeunesse (1)
• Purdue University (2)
• Purley Sixth Form College (1)
• Purple Mountain Observatory (1)