• 98 Astronomy
• 98 Outer space
• 98 Space flight
• 10 Engineering
• 8 Aeronautics
• 8 Aerospace engineering
• 8 History
• 7 Solar system
• 5 Aerodynamics
• 5 Technical education
• 4 Galaxies
• 4 International relations
• 4 Space
• 4 Stars
• 4 War
• 4 World history
• 3 Physics
• 3 World politics
• 2 Mechanical engineering
• 2 Reconstruction (1939-1951)
• 2 Sound
• 2 Sound-waves
• 2 Wave theory of light

• 97 Films Media Group
• 28 Broken Arrow Media (Firm)
• 25 PBS (Firm)
• 6 A&E Networks (Firm)
• 5 BBC (Firm)
• 5 Espresso TV (Firm)
• 4 TVF International (Firm)
• 2 Australian Broadcasting Corporation (Firm)
• 2 CINEFETE (Firm)
• 2 CNN (Firm)
• 2 Economist Group Limited (Firm)
• 2 Filmhub (Firm)
• 2 Inside Science (Firm)
• 2 National Geographic Society (U.S.)
• 1 3Boxmedia (Firm)
• 1 American Public Television (Firm)
• 1 BBC Worldwide Learning (Firm)
• 1 Big Media Holdings LLC (Firm)
• 1 Bloomberg LP
• 1 Cerebellum Corporation (Firm)
• 1 Cinetic Rights Management LLC. (Firm)
• 1 Intelligence Squared US (Firm)
• 1 Looking Glass International (Firm)
• 1 Magic Lantern Media Inc (Firm)

• 92 English
• 6 Unknown

• 5 United States
• 3 Russia (Federation)
• 1 Asia
• 1 China

Limit year range