What is Dark Energy (Mobile Version) #science #mobile #nature
5What is Dark Energy, and Hubble's discovery of the expanding universe due to observations of red shift of stars and galaxies.
This video is a re-edited for mobile (vertical format), and trimmed for content, from original video: • What is Dark Energy and the ending of...
Edwin Hubble, as a young scientist returning from the Great War noticed that in all of his observations of space, stars and galaxies seems to be moving away from us. Every celestial body measured through red shift showed acceleration away from the solar system and the milky way galaxy. The discovery of the expansion of the universe lead to the formulation of the Hubble constant; which states that that further a celestial body is from the observer, the faster it will appear to move away from the observer due to the expansion of space-time, which lead to the one of the biggest discoveries in cosmology, the discovery of dark energy within of our universe.
Dark energy is the unseeable, untouchable and undetectable energy that humanity attributes in increasing acceleration of the universe to. The law gravity tells us that mass attracts, so universe should be deaccelerating and eventually lead to the Big Crunch, and yet everything is accelerating and might one day lead to the Big Rip. How did mass get so concentrated during the Big Bang?
What happens when time goes to infinity? What happens if space time and the universe keep expanding until the end of time, until the heat death of the universe, what will happen to entropy in a infinitesimally large universe?
Art work from the video is about Cixin Liu's "Rememberance of Earth's Past" series of novels
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