Transcript of The Big Rip
By Jack Markman, Nick Penrose, Tyson Barnes, and Quentin Ochoa The Big Rip The Beginning of the Universe is widely accepted as being the Big Bang. This was an event where the Universe was created from a speck the size of an atom. The Universe was created when this atom exploded outwards with enough energy to launch the Universe into being. In the billions of years since the Universe began, it is still expanding, propelled by the Big Bang explosion. For many years, scientists believed that the Universe would end when the propulsion from the Big Bang would be overcome by gravity. The Universe would end and be crushed back into the "atom" it was created from. Recently, however, scientists have postulated new theories on the fate of the Universe. Here is where science stands. Scientists have discovered a new force, called Dark Energy, which makes up 73% of mass-energy of the Universe. They know next to nothing about it, hence it's mysterious name. All they know is that it is overpowering gravity and speeding up the expansion of the Universe. One of the theories posited about Dark Energy was that it would accelerate everything in the Universe to such a speed that everything in the Universe, down to the atoms, would be ripped apart. Another theory was that Dark Energy will continue to accelerate the Universe, but that it won't grow in strength and Universe will get larger, but will not be ripped apart. Despite the little knowledge we have on Dark Energy, some scientists have calculated that the Universe will not be ripped apart. They say it will just keep expanding until everything in the Universe is so far away from everything else in the Universe that nothing is visible in the night sky (except maybe the moon) This is called indefinite expansion. So if you are planning on stargazing, do it now, because in 27.5 billion years, you won't have much to look at. Bibliography http://www.universetoday.com/22382/no-big-rip-in-our-future-chandra-provides-insights-into-dark-energy/Full transcript
http://scienceblogs.com/startswithabang/files/2011/05/56197main_dark_schematic-lg.jpeg The End ...of the Universe? Quiz 1. What was the name of the theory of gravity crushing the universe?
2. What was the name of the theory of dark energy ripping apart the Universe?
3. What is the velocity of a bullet in space?
4. What is the name of the theory of the Universe that is not ripped apart? Answers 1. The Big Crunch
2. The Big Rip
3. A few kilometers a second.
4. Indefinite Expansion This theory is called the Big Crunch. Video here.