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We travel to black holes, the most mysterious objects in the universe. We will learn some facts from the general theory of relativity, see how we can discover black holes and examine some of their exotic properties such as time dilation and Hawking radiation. ►Astronio on social media: Facebook: / astronioyoutube Instagram: / _astronio_ Twitter: / _astronio_ ►Support the channel: / astronio ------ More information: -In the formula for time dilation: t_0 is the time interval between two events as measured by an observer (within a gravitational field) located at a distance r from a mass that has a Schwarzschild radius r_s. t_f is the time interval measured for the same event by an observer very far from any mass. -In the Schwarzschild radius formula (3:47): M is the mass of the object causing the curvature of spacetime, G is the universal gravitational constant, and c is the speed of light in a vacuum. -Hawking radiation in a black hole: http://www.physicsoftheuniverse.com/t... -NASA articles on black holes: https://www.nasa.gov/subject/6895/bla... -Kerr black hole: http://www.daviddarling.info/encyclop... -------------------------------------------------- Presentation-Editor: Pavlos Kastanas Software: Universe Sandbox 2, Space Engine Image sources: NASA, ESA, ESO, Pixabay (Creative Commons 3.0 License) English Subtitles: Count Pythagoras, GANDALF THE GREY, Stella Kavvadia Music: -Jason Shaw (Audionautix) - Big Car theft under a Creative Commons 3.0 License (https://creativecommons.org/licenses/...) -Kevin MacLeod - Hypnothis under a Creative Commons 3.0 License (https://creativecommons.org/licenses/...) -Chris Zabriskie - Divider under a Creative Commons 3.0 License (https://creativecommons.org/licenses/...)