Inexplicable Cosmology

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Inexplicable Physics
Turn now to some inexplicable aspects of physics and our physical world. Among the many eye-opening topics you'll learn about in this episode are the discovery of more and more elements on the periodic table; muon neutrinos, tao particles, and the three regimes of matter; the secrets of string theory;…
Inexplicable Life
Join Professor Tyson on a fascinating investigation of the possible origins of life in the universe. Why was Jupiter believed to be a good environment for life in the 17th century? Why is there only one single "tree of life" on Earth instead of multiple ones? Could life have come…
The Spooky Universe
Did you know that electrons have never actually been observed by scientists to this day? Or that quarks can only be studied in pairs? Or that as you travel faster or find yourself in a higher gravity, time ticks more slowly for you? Delve into these and other mind-warping facts…
History's Mysteries
Begin this journey by taking a closer look at concepts that were once unexplainable but are now better understood. You'll focus on two such former mysteries: the existence of an invisible "aether" through which light and sound were believed to travel and the orbit of Mercury, which seemed to violate…
Gravity’s Horizon—Anatomy of a Black Hole
Plunge into the subject of black holes, which are massive objects that have collapsed completely under their own gravity. Learn how black holes distort spacetime and explore the supermassive black holes that lie at the hearts of galaxies. Then ask: Are there such things as micro-black holes?
The Hubble Ultra Deep Field
Episode 11 of Experiencing Hubble
Completing your tour of 10 remarkable Hubble images, plunge into the Hubble Ultra Deep Field, the deepest optical image of the cosmos made to date. This extraordinary view shows 10,000 galaxies extending far beyond the Milky Way and back to the epoch of galaxy formation.
The Inexplicable Universe: Unsolved Mysteries Series
What do scientists know about the universe? What still remains to be uncovered? What are some of the next avenues of exploration? Professor Neil deGrasse Tyson's course The Inexplicable Universe: Unsolved Mysteries is a marvelous journey to the frontiers of the known (and unknown) universe and introduces you to tantalizing…
The Search for Exoplanets: What Astronomers Know
As recently as 1990, it seemed plausible that the solar system was a unique phenomenon in our galaxy. Thanks to advances in technology and clever new uses of existing data, now we know that planetary systems and possibly even a new Earth can be found throughout galaxies near and far.…
The Next Revolution
Survey the greatest unsolved problem in theoretical physics: the search for a quantum theory of gravity. Examine string theory, loop quantum gravity, and also entropic gravity, which suggests a revolutionary link with thermodynamics. Close the course with a deepened appreciation for the connection between everyday features of gravity and the…
Final Frontier? - Guide to the Universe
Part of the Series: Horizon
Over the last 40 years, Horizon has joined scientists as they have probed the secrets of the universe - from the origin of dark matter to the nature of gravity and even stealing a glimpse into the private life of a black hole. Dallas Campbell delves into the Horizon archive…
Part II: Physics in Space - Orbital Motion and Re-entry
Part of the Series: Physics of Spaceflight Series
Concepts Covered:
  • Newton's Laws of Motion
  • Circular Motion
  • Rotational Dynamics
  • Heat
  • Conservation of Energy
This program focuses on the physics of orbital motion and re-entry into the earth's atmosphere. The program discusses the dynamics of orbital motion and the apparent weightlessness experienced while in orbit. Kepler's 3 laws…
Hubble's View of Galaxies Near and Far
Episode 8 of Experiencing Hubble
Hubble's image of the nearby galaxy NGC 3370 includes many faint galaxies in the background, exemplifying the telescope's mission to establish an accurate distance scale to galaxies near and far: along with the related expansion rate of the universe. Discover how Hubble's success has led to the concept of dark…