• 5 Videos, Slides, Films

• 5 DVDs

• 3 Doctor (Fictitious character)
• 3 Human-alien encounters
• 3 Interplanetary voyages
• 3 Time travel
• 2 Cosmology
• 1 Astronomy
• 1 Atmospheres
• 1 Constellations
• 1 Cosmography
• 1 Creation
• 1 Evolution
• 1 Expanding universe
• 1 Exploration
• 1 Extraterrestrial beings
• 1 Galaxies
• 1 Geology
• 1 Gravitational fields
• 1 Gravity
• 1 Interstellar communication
• 1 Planetary volcanism
• 1 Planets
• 1 Stars
• 1 String models
• 1 Surfaces

• 4 Warner Home Video (Firm)
• 3 BBC Cymru Wales
• 3 Gold, Murray, 1969-
• 2 BBC Worldwide Americas, Inc
• 2 Barrowman, John, 1967-
• 2 Clarke, Noel, 1975-
• 2 Coduri, Camille
• 2 Davies, Russell T.
• 2 Gardner, Julie
• 2 Grainer, Ron
• 2 Lyn, Euros
• 2 Moffat, Steven, 1961-
• 2 Piper, Billie, 1982-
• 2 Smith, Matt, 1982-
• 1 2 Entertain Video (Firm)
• 1 Agyeman, Freema, 1979-
• 1 Ahearne, Joe
• 1 BBC America
• 1 BBC One (Television station : London, England)
• 1 BBC Productions
• 1 BBC Worldwide Americas, Inc.
• 1 BBC Worldwide Ltd
• 1 Bloom, Claire, 1931-
• 1 Boak, Keith

• 5 English

• 1 Mars (Planet)
• 1 Solar system

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