Is it possible to go backwards through time? We travel forwards every day, but traveling back could let us change our past, visit old friends, or manipulate the timeline to our benefit... Although our knowledge of space and time remains incomplete, we can still use what we know to consider possible time machines. But what kind of paradoxes would this entail and how can we resolve them? Join us today on a special journey through time.
An educational video written and presented by Professor David Kipping
This video is based on research conducted at the Cool Worlds Lab at Columbia University, New York. You can now support our research program directly here: [ Ссылка ]
All music used is licensed by SoundStripe.com or through Creative Commons:
► "It's Always Darkest Before the Dawn" by Hill, licensed through SoundStripe.com: [ Ссылка ]
► "Waking Up" by Atlas, licensed through SoundStripe.com: [ Ссылка ]
► Cylinder Four ([ Ссылка ]) by Chris Zabriskie ([ Ссылка ]); licensed under a Creative Commons Attribution license ([ Ссылка ])
► "Always Dreaming" by Caleb Etheridge, licensed through SoundStripe.com: [ Ссылка ]
► Cylinder Two ([ Ссылка ]) by Chris Zabriskie ([ Ссылка ]); licensed under a Creative Commons Attribution license ([ Ссылка ])
► "Fable" by Stephen Keech, licensed through SoundStripe.com: [ Ссылка ]
► "Selha" by Stephen Keech, licensed through SoundStripe.com: [ Ссылка ]
Further reading and resources:
► Echeverria, F., Klinkhammer, G. & Thorne, K. S. (1991), "Billiard balls in wormhole spacetimes with closed timelike curves: Classical theory", Phys. Rev. D., 44, 1077: [ Ссылка ]
► S. Kalyana Rama & Siddhartha Sen (1994), "Inconsistent Physics in the Presence of Time Machines": [ Ссылка ]
► Stephen Hawking (1992), "Chronology protection conjecture", Phys. Rev. D., 46, 603: [ Ссылка ]
► Max Tegmark (1997), “On the dimensionality of space time”, CQG, 14, L69: [ Ссылка ]
Films clips used:
► The Assassination of Jesse James by the Coward Robert Ford (2007) Warner Bros
► Interstellar (2014) Paramount
► The Grey (2011) Open Road Films
► About Time (2013) Universal Pictures
► The Time Machine (2002) Dreamsworks Pictures
► Passengers (2016) Columbia Pictures
► Back to the Future (1985) Universal Pictures
► Avengers: Endgame (2018) Walt Disney Studios Motion Pictures
► Somewhere in Time (1980) Universal Pictures
► Lucy (2014) Universal Pictures
► The Matrix (1999) Warner Bros
► Immortal Beloved (1994) Columbia Pictures
► Prisoners (2013) Warner Bros
► X-Men: Days of Future Past (2014) 20th Century Fox
► Captain America: Civil War (2016) Walt Disney Studios Motion Pictures
► Inception (2010) Warner Bros
► Silver Linings Playbook (2012) The Weinstein Company
► The Dark Knight Rises (2012) Warner Bros
► Hidden Figures (2016) 20th Century Fox
Television clips used:
► The Expanse (Legendary Television)
► Star Trek: The Next Generation (Paramount)
► Dr Who (BBC)
► Star Trek: Enterprise (Paramount)
► Game of Thrones (HBO)
► Genius (National Geographic)
Other video clips used:
► ESO spacetime diagram [ Ссылка ]
► Earth orbit animation by Brad Freese: [ Ссылка ]
► Hefele Kating experiment video by Gideon Boulton: [ Ссылка ]
► SpaceX satellite launch: [ Ссылка ]
► Wormhole animation by Robert Wilde: [ Ссылка ]
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Traveling Back in Time
Теги
AstronomyAstrophysicsCool Worldstimetraveltimemachinetime machinetime travelback to the futurescience of timebackwards time traveljourney through timecan we go back in time?is time travel possible?time machine possible?temporal mechanicswormholewormhole timespacetimechronology protectionnovikov principlemultiversemultiple timelines