{"page":"\n\n
\n
\n
\n
\n
\n\nVideo\n
\n

\nIs Time Travel Impossible?\n

\n
\n
\nGet Free Access for 10 Days!\n
\n
\n
\n
\n
\n
×
\n\n\n
\n\nPublisher:\n\nPBS\n\n\n
\n
\nTime travel stories are cool because both the past and future are somehow more interesting that the present and because everyone wants a redo. But so far it appears we’re doomed to live consumed by regret in the eternal, boring present....\nTime travel stories are cool because both the past and future are somehow more interesting that the present and because everyone wants a redo. But so far it appears we’re doomed to live consumed by regret in the eternal, boring present. Time marches on, inexorably and only forward. Or so we thought until Einstein came along. His special and general theories of relativity changed the way we think about time forever, and believe it or not, their raw equations permit time travel. They even tell us how to do it. So let’s review the possibilities, and decide how possible they really are.\n
\n
\n\n
\n
\n
\n
\n

Resource Details

\n
\n
\n
\n
Curator Rating
\n
\n
\n
\n
\n
\n
Educator Rating
Not yet Rated
\n
\n
\n
\n
\n
Media Length
\n
12:33
\n
\n
\n
\n
\n
Grade
12th - Higher Ed
\n
\n
\n
\n
\n
Subjects
Science
5 more...
\n
\n
\n
\n
\n
Media Type
Instructional Videos
\n
\n
\n
\n
\n
Source:
\n
\nPBS Space Time\n\n
\n
\n
\n
\n
\n
Date
\n
2019
\n
\n
\n
\n
\n\n
Language
English
\n
\n
\n
\n
\n
Audiences
For Teacher Use
2 more...
\n
\n
\n
\n
\n
Usage Permissions
Fine Print: Educational Use
\n
\n
\n
\n
\n
\n

Additional Materials

\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Transcript\n
\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Preview\n
\n
\n
\n

Concepts

\n
\n
space, quantum mechanics, time, time travel, mass, energy, matter, paradoxes, equations, light, curves, outer space, astrobiology, black holes, the universe, science fiction
\n
\n\n\n
\n
\n
\n
\n

Additional Tags

\n
\n
physics, astrophysics, space physics, pbs, space time, pbs space time, matt o’dowd, einstein, einsteinian physics, general relativity, special relativity, dark energy, dark matter, math, calculus, maths, reality, consciousness, delorean, back to the future, tardis, tachyon, approximate theories, regular mass, energy conditions, distant points, casimir effect, imaginary mass, negative mass, time machine, closed time, negative energy, exotic matter, travel back, special, back, long, path, open, universe, impossible
\n
\n\n\n
\n
\n
\n
\n

Classroom Considerations

\n
Video is ad-free
\n
\n
\n

Educator Ratings

\n
\n
\n
\n
\n
\n\nShow resource details\n
\n
\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: Is Time Travel Impossible?\" href=\"/subscription/new\">\"Is\n\n
\n
\n
\n\n\n\n"}