• 244 Videos, Slides, Films

• 236 Physical sciences
• 124 Outer space
• 108 Space flight
• 94 Exploration
• 45 Galaxies
• 44 Stars
• 43 Space
• 34 Solar system
• 14 Manned space flight
• 14 Outer space--Exploration
• 10 History
• 9 Engineering
• 9 Physics
• 7 Aeronautics
• 7 Aerospace engineering
• 5 Aerodynamics
• 5 Philosophy
• 5 Technical education
• 5 World history
• 4 International relations
• 4 War
• 3 Sound
• 3 Sound-waves
• 3 Wave theory of light

• 57 MVD (Firm)
• 43 PBS (Firm)
• 28 Broken Arrow Media (Firm)
• 21 A&E Networks (Firm)
• 18 Trader Multimedia Inc. (Firm)
• 10 BBC (Firm)
• 9 National Geographic Digital Media (Firm)
• 8 Films for the Humanities & Sciences (Firm)
• 5 Cerebellum Corporation (Firm)
• 5 Economist Group Limited (Firm)
• 5 Espresso TV (Firm)
• 5 Public Broadcasting Service (U.S.)
• 4 Australian Broadcasting Corporation (Firm)
• 3 Inside Science (Firm)
• 3 National Geographic Society (U.S.)
• 2 BBC Worldwide Learning (Firm)
• 2 CINEFETE (Firm)
• 2 CNN (Firm)
• 2 Knowledgemotion (Firm)
• 1 3Boxmedia (Firm)
• 1 American Public Television (Firm)
• 1 Autentic Distribution GmbH (Firm)
• 1 Big Media Holdings LLC (Firm)

• 237 English
• 6 Unknown
• 1 Spanish

• 5 United States
• 3 Russia (Federation)
• 2 Solar system
• 1 Asia
• 1 China
• 1 Middle East
• 1 Outer space

• 244 Internet videos
• 152 Video recordings for the hearing impaired
• 8 Educational films
• 7 Videorecording
• 1 Video recording

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