Time travell talks

 The search for a single number, the Hubble constant,... ...the rate of expansion of our universe,... ...has consumed astronomers for generations. Finally, two powerful and independent methods... ...have refined its measurement to unprecedented precision. The only problem... is that they don't agree,... ...and it's causing to question... ...some of the most basic assumptions about the universe. In 1929, Edwin Hubble... discovered the universe. He gave us our first incontrovertible proof... ...that there are galaxies outside the Milky Way,... ...by measuring the distances to the spiral nebulae They were many millions of light years from us,... ...far outside the Milky Way, and so must be galaxies in their own right. Combined with the Doppler shift velocity measurements of Vesto Slipher,... ...Hubble revealed that the galaxies are not only receding from us,... ...but they are receding at a rate proportional to their distance. An impossibly vast universe had been discovered beyond...

  Transcriber: Katarina EricsonReviewer: Denise RQ The Universe is really big. We live in a galaxy, the Milky Way Galaxy. There are about a hundred billion starsin the Milky Way Galaxy, and if you take a camera and you point itat a random part of the sky, and you just keep the shutter open, as long as your camera is attachedto the Hubble Space Telescope it will see something like this. Every one of these little blobsis a galaxy, roughly the size of our Milky Way. A hundred billion starsin each of those blobs, there are approximately a hundred billiongalaxies in the observable Universe. A hundred billion is the only numberyou need to know, the age of the Universebetween now and the Big Bang is a hundred billion in dog years (Laughter) which tells you somethingabout our place in the Universe. One thing you can do with a picturelike this is simply admire it, it's extremely beautiful,and I've often wondered what is the evolutionary pressurethat made our ancestors develop, adapt, a...

Imagine you own a watch that let's you travel through time. One day, you get the bright idea to travel back to the 1920's to mess with your grandparents. You press a few buttons, and suddenly you're standing beside old Pappy who is taking in the scenery at the precipice of the Grand Canyon. Since you've never been the biggest fan of your grandfather, you decide to push him over the edge. Gravity does its thing, and a few seconds later, no more Pappy. But wait, if you killed your grandfather before he ever met your grandmother... you wouldn't have been born to be able to go back in time and kill him! Here's the problem. If you didn't exist and killed your grandfather, you couldn't have killed him... Because you didn't kill him, he's still alive. but that would mean that you yourself would be alive and now you can go back in time to kill him.  And so the endless loop goes on. This is called the Grandfather Paradox. And it's part of what makes ...

 One evening in the spring of 1905 Albert Einstein, then a patent clerk in Bern, after trudging through his day's work decided to board a tram car on his way home Einstein would often wrap up his work as soon as possible to contemplate the truths of the universe in his free time It was one of these thought experiments he devised on that tram car that revolutionized modern physics forever While receding away from the Zytglogge clock tower Einstein imagined, what would happen if the tram car were receding at the speed of light He realized that if he were to travel at 186,000 miles per second the clocks hands would appear to completely freeze At the same time Einstein knew that back at the clock tower the hands would tick along at their normal pace For Einstein time had slowed down.  This thought blew his mind. Einstein concluded that the faster you move through space the slower you move through time. How is this possible? Einstein's work was heavily influenced by two of the most...

Worm holes     Worm holes are the tunnels which interconnected by two or more distant  points in galaxies or universe at an instant of a time in past or future.   according to physicist they can say that worm holes can exist    but we can't see worm holes because the wormholes are the very small tunnels which was open  and closed in few seconds  or nano seconds.  https://amzn.to/3dUpfxV How we can time travel by using worm holes ?    A physicst has shown that worm holes can exist: tunnels in curved space-time,connecting two or more distant points ,through which time travel is possible but the worm holes are very small in size or create for nano seconds ,so the time travell is theoritically possible by using worm holes. But don't pack your bags for a trip to other side of the galaxy yet; although it's theoretically possible, it's not useful for humans to travel through, said the author of the study, Daniel Jafferis...

  s pace relates with time          According to theory of relativity,     "the faster you move through space ,   the slower you move through time"   "the slower you move through space,   the faster you move through time" but I think space time relates with this equation                                         ჳ   𝝳x   + 𝝳y  + 𝝳z     〓     𝝳  T     𝝳t      𝝳t       𝝳t            𝝳x𝝳y𝝳z {t→relative time of a particle with the space axis ,x,y,z axis} {T→space time} when a particle move in space x,y,z axis direction respectively  with the respective velocity then we find the position of a particle in space.       Time ∝    1    ...