In astronomy, we've been looking at different kinds of light and opening up the universe a little bit more of the time. But then in 2015, the roof came off. Something happened that changed everything, the ability to see waves in space and time itself. Gravitational waves help us roll back the clock to the dawn of time, discover epic cosmic collisions, on make Earth-shaking discoveries. Gravitational waves are the biggest game changer since the invention of the telescope. We have a completely new universe to view now. A new exploration of space is just beginning.

Professor Jim Al-Khalili investigates the amazing science of gravity. A fundamental force of nature, gravity shapes our entire universe. It sculpts galaxies and warps space and time. But gravity’s strange powers also affect our daily lives in the most unexpected ways. This is a story with surprises in store for Jim himself. In telling the story of gravity, his own understanding of the nature of reality comes to be challenged. Finally, Jim discovers that, despite incredible progress, gravity still has many secrets to unveil.

The documentary, an own production, immerses the viewer in a journey that blends science and philosophy, questioning the nature of time and unveiling a 4-dimensional universe, where space and time are integrated. We are invited to consider a universe in which past, present, and future coexist, suggesting that our linear perception of time might be more of a mental construction than a physical reality. The narrative progresses by exploring how quantum particles exist in states of probability until they are observed, at which point they acquire defined properties. Then, the provocative hypothesis is presented that observation also fixes the temporal dimension of the particles.
The sensation of the flow of time and the distinction between past, present, and future are introduced as mental constructions, arising from the human brain's limited capacity to process the complexity of reality. It is then proposed that the mind, by observing itself, fixes itself in the temporal dimension, thus creating the illusion of the present. Finally, the impact of these theories on free will is discussed.
This documentary challenges viewers to look beyond their everyday perceptions and consider the possibility that reality is much more complex and fascinating than our immediate experiences suggest. It is an invitation to explore the limits of science, philosophy, and the mind itself in search of answers to some of the deepest questions of existence.
More information on https://www.javier-serrano.blog/Ciencia/representacion_tridimensional_del_universo.php

Time travel is not forbidden by the laws of nature, but to build a time machine, we would need to understand more about those laws and how to subvert them than we do now. And every day, science does learn more. In this film Horizon meets the scientists working on the cutting edge of discovery - men and women who may discover how to build wormholes, manipulate entangled photons or build fully functioning time crystals. In short, these scientists may enable an engineer of the future to do what we have so far been only able to imagine - to build a machine that allows us travel back and forward in time at the touch of a button. It could be you! Science fiction? Watch this film.

On November 25th, 1915, Einstein published his greatest work: General Relativity. The theory transformed our understanding of nature’s laws and the entire history of the cosmos, reaching back to the origin of time itself. Now, in celebration of the 100th anniversary of Einstein’s achievement, discover the inside story of Einstein’s masterpiece". The story begins with the intuitive thought experiments that set Einstein off on his quest and traces the revolution in cosmology that is still playing out in today’s labs and observatories. Discover the simple but powerful ideas at the heart of relativity, illuminating the theory—and Einstein’s brilliance—as never before. From the first spark of an idea to the discovery of the expanding universe, the Big Bang, black holes, and dark energy, NOVA uncovers the inspired insights and brilliant breakthroughs of “the perfect theory.”

We feel it every moment of our lives but for physicists, gravity is the longest running unsolved mystery of the universe. Why do all objects that have mass pull on one another? Cutting-edge theories are proposing unexpected answers: Gravity could be another force in disguise, a thermodynamic mirage, or even, a shadow of a hidden holographic universe. If so, the force that holds us to the surface of the earth, and holds the earth in orbit around the sun, may be a trick of the mind. We feel it, but it may not be real. Is Gravity an Illusion?