captive bredtiptiptip

Brian Greene, professor of physics and mathematics at Columbia University and co-founder of the World Science Festival, explains what we know about time travel so far.

Tech Insider tells you all you need to know about tech: gadgets, how-to's, gaming, science, digital culture, and more.
Subscribe to our channel and visit us at: http://www.businessinsider.com/sai
TI on Facebook: https://www.facebook.com/techinsider
TI on Instagram: https://www.instagram.com/tech_insider/
TI on Twitter: https://twitter.com/techinsider

--------------------------------------------------

Following is the transcript of the video:

Brian Greene: I’m Brian Greene, professor of physics and mathematics at Columbia University and co-founder of the World Science Festival.

It's critical that you realize that there are two types of time travel, and they are radically different. Time travel to the future? Definitely possible.

We know how to do it because Einstein showed us the way over a hundred years ago. It’s surprising how few people actually really know about this in their bones. He showed that if you go out into space and travel near the speed of light, and you turn around, and you come back, your clock will be ticking off time more slowly. So, when you step off it's going to be the future on planet Earth. You will have time traveled into the future.

He also showed that if you hang out near a nice strong source of gravity — a neutron star, a black hole — and you kind of get right near the edge of that object, time also for you would slow down real slow relative to everybody else. And therefore, when you come back to Earth, for instance, it'll again be far into the future.

This is not controversial stuff. Any physicist who knows what they're talking about agrees with this. But the other kind of time travel — to the past is where the arguments start to happen because many of us don't think that time travel to the past is possible.

The main proposal that people at least consider worthy of attention for traveling to the past does make use of a weird concept called wormholes. A wormhole is something that really … Albert Einstein again discovered. The guy has like got his name written over everything in this field.

It's a bridge, if you will, from one location space to another. It's kind of a tunnel that gives you a shortcut to go from here to here. Now he discovered this in 1935 but it was subsequently realized that if you manipulate the openings of a wormhole — put one near a black hole or take one on a high-speed journey — then time of the two openings of this wormhole tunnel will not take off at the same rate, so that you will no longer just go from one location in space to another, if you go through this tunnel — through this wormhole — you'll go from one moment in time to a different moment in time. Go one way, you'll travel to the past, the other way, travel to the future.

Now again, we don't know if wormholes are real. We don't know if they are real whether you'll be able to go through them. So, there are all sorts of uncertainties here. Most of us think that you're not going to actually go on a whirlwind journey through a wormhole to the past. But it's still not ruled out.

Related keywords

physics classroom,physics regents,innovation diploma plus,world science festival jobs,techo,albert einstein theory,wormholes in space,insider meaning,space center houston,tech insider 7 minute workout,innovation department,insider dev tour,designer shoes,technology news,outer space in spanish,world science festival tickets,science magazine,space exploration history,physics formula sheet,time traveler's wife,tech insider instagram,digital culture media and sport,physics jobs,insiders tvf,world science festival 2018 location,technocelular1,brian greene net worth,ti9 champion,space exploration movies,https://insider.in/,time travel meme,techo abovedado,tech insider twitter,outer space words,space jam 2 cast,space exploration merit badge worksheet,digital culture transformation,insider food,tech insiders,time travel vienna,physics for dummies,tech insider prosthetics,space exploration games,wormholes in movies,brian greene religion,world science festival bobby mcferrin,technology high school,space exploration games ps4,digital culture studies,space exploration jobs,physics formulas,designated survivor,albert einstein history,digital culture and education,insider movie,albert einstein wife,techno on,insider discount code,time travel.pl,tiger sugar,brian greene quotes,titan22,technology quotes,space exploration games pc,ti9,albert einstein facts,insider chennai,titan gel,wormholes eve,innovation consulting,technology addiction,outer space news,tech insider facebook,technology companies,innovation line,digital culture network,timeline,tech insider intermittent fasting,wormholes and black holes,insider careers,design space,wormholes ultra moon,innovation quotes,physics girl,wormholes eve online,tech insider india,brian greene physics,science museum london,tech insider products,outer space synonym,brian greene podcast,brian greene books,space exploration design,albert einstein contribution,world science festival youtube,designer brands,techno house,space crime,outer space treaty,design within reach,techos de madera,insider trading,spacex,science fiction lyrics,space exploration technologies,science daily,tech insider sleep,techera,brian greene elegant universe,albert einstein picture,tipidpc,digital culture pdf,time travel movies,world science festival 2019 dates,digital culture definition,technology meme,science research,technics,tim hortons,space mountain,world science festival nyc 2019,tech insider wiki,tech insider 22 inventions,space exploration companies,innovations lighting,brian greene wife,digital culture asu,world science festival ny,time traveller,space exploration news,insider trading regulations,wormholes stellaris,ticketnet,science fiction,innovation nation,outer space coloring pages,outer space tattoo,albert einstein award,ticketworld,physics memes,space coast credit union,time travel вена,science en español,insider app,world science festival 2018,space exploration definition,technology background,outer space movies,outer space crafts,space cowboys,outer space wallpaper,space jam,technology synonym,physics equations,outer space crime,insider threat,physics calculator,designer handbags,time,technology in the classroom,technology in education,physics textbook,world science festival 2020,brian greene ted talk,technology stocks,albert einstein inventions,digital culture jobs,designing women,physics jokes,science advances,wormholes serebii,tech to perfection,albert einstein quotes,tech insider uk,technology stack,time now,techos de chapa,tiktok,outer space pictures,time travel movies 2019,innovation definition,wormholes pokemon,brian greene columbia,innovation synonym,innovation optics,outer space strain,science direct elsevier,time travel warszawa,time travel adventures,world science festival 2018 youtube,designated survivor 60 days,brian greene fabric of the cosmos,digital culture degree,physics definition,space exploration timeline,space exploration facts,science bits,space race,insider kenny sebastian,physics games,albert einstein tagalog,wormholes pokemon ultra moon,tinder,titanic,technicolor dpc3848ve,designer bags,physics terms,spaceballs,designer belts,digital culture media and sport committee,world science festival brisbane 2018,space exploration quotes,innovation that excites,wormholes and time travel,ti9 schedule,science of the total environment,physics reference table,time travellers,world science festival brisbane 2019,science fiction movies,technology credit union,digital culture kcl,outer space drawing,space exploration day,designer backpacks,space jam 2,innovation africa,albert einstein death,wormholes volumes,world science festival 2018 dates,technology readiness level,techint careers,innovation meaning,albert einstein movie,tech insider youtube,digital culture king's,techno,digital culture major,space exploration benefits,wormholes ultra sun,outer space vodka,designated survivor season 2,innovation endeavors,time travel films,designated survivor season 3 cast,physics today,digital culture wikipedia,brian greene joe rogan,sciencealert,designated survivor season 3,insider russell peters,ultra wormhole pokemon,space force,brian greene twitter,designated survivor season 4,tech insider honey,digital culture and design,digital culture and society,science news,innovation high school,albert einstein works,tech house,space exploration factorio,science traduccion,brian greene apple,techos de pvc,technicolor,wormholes meaning,wormholes pokemon ultra sun and moon,space movies,design essentials,tin number,space invaders,albert einstein children,outer space clipart,science direct,time4travel.pl,tech insider magazine,digital culture adalah,world science festival gala,time traveler's wife google drive,innovations wallcovering,titan,technology jobs,brian greene google scholar,brian greene light falls,time travel adventures all artifacts,sciences po,tech insider presents,tech insider videos,digital cultures usyd,albert einstein education,physics news,world science festival ticket price,innovation luggage,spacex stock,brian greene pbs,physics gre,space exploration articles,insider tickets,designated survivor cast,tinolang manok,wormholes in quran,space station,outer space background,innovation playlist,insider.in coupons,time traveller meme,spacex launch,technology insurance company,designer shoe warehouse,physics subject test,outer space quotes,albert einstein nationality,time travel луцьк,world science festival new york,science hub,science citation index,design bundles,space exploration merit badge,techo de cristal,science kombat,technisys,innovations for poverty action,insider trading meaning,world science festival volunteer,albert einstein iq,albert einstein brain,digital culture media and sport minister,techint,time travel romance,space shuttle,tech insider español,space camp,world science festival 2019 schedule,brian greene iq,space needle,outer space names,timer,world science festival brisbane,wormholes explained,albert einstein age,brian greene actor,technology etf,time travel adventures roblox,wormholes plugin,innovation lab,wormholes pokemon ultra sun,tech insider matthew walker,technology student association,time traveler,design thinking,outer space backpack,brian greene string theory,technology definition,insider zakir khan,technology stores near me,technology line,albert einstein discoveries,