Sagan on Time Travel

PBS Learning Media
Contributed By
PBS Learning Media
Resource Type
Classroom Material
Keywords
NOVA Time Travel carl sagan time travel wormholes grandfather paradox speed of light
Subjects
Science
Grade Levels
Grade 9 Grade 10 Grade 11 Grade 12
Audience
Classroom Teacher / Educator
Related Resources

Sagan on Time Travel

In this interview from NOVA, astronomer and author Carl Sagan offers wide-ranging thoughts on time travel. He explains what paradox means in the context of time travel and why time travel is consistent with natural laws. He also offers reasons why we haven't met any time travelers and describes theoretical natural phenomena like wormholes that may one day be the means for time travel.
Publisher
PBS Learning Media

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