UNIVERSE.pptx

the universe is rea l Lesson 1  THE UNIVERSE Theories behind the Origin  WHAT ARE YOU CURIOUS ABOUT THE UNIVERSE? When was the Universe born? Why don't planets hit each other? Why can't we see the whole universe? Does the Universe have an edge, beyond there...

the universe is rea l Lesson 1  THE UNIVERSE Theories behind the Origin  WHAT ARE YOU CURIOUS ABOUT THE UNIVERSE? When was the Universe born? Why don't planets hit each other? Why can't we see the whole universe? Does the Universe have an edge, beyond there is nothing?  Objectives: Enumerate the theories behind the origin of the universe; Explain Big bang theory; Explain the events that occured as our Universe  Theories STEADY PULSATING BIG BANG STATE UNIVERSE THEORY THEORY THEORY  The Big Bang Theory It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching! 13.8 BILLION YEARS  Our universe is just a small part. Scientist believe that there are many other universes’ that exist. 2. We live In a multiverse. This idea came from the Big Bang, which might have given rise to bubble like structures which expanded in their own time. 13.8 3. Astronomer Edwin Hubble, in 1920’s discovered that the universe is not static. It is expanding and contracting continuously BILLION 4. There is a dark energy that is making the universe expand and accelerate at a larger rate than it did many years ago YEARS 5. There are may galaxies apart from our milky way that are moving further and further way 6.According to the scientists, the planets, stars and galaxies include only 4% of what universe consist of. The remaining 96% is still unknown or cannot be seen. 13.8 7. The universe is infinite. It has no end. Thus scientist believe that the universe is not a closed sphere but is a sheet of paper that has no boundaries. BILLION YEARS  Albert Einstein's Theory of relativity - Albert Einstein unveils his theory of general relativity in which he proposes that mass warps both time and space, therefore large masses can bend light. Alexander Friedmann - He discovered the expanding- universe solution to the general relativity field equations. He basically solved Einsteins theory allowing us to further our discoveries on the universe and The Big Bang. Hubble's and Hooker's Telescope - Measured distance and velocities of galaxies. This telescope was the first major telescope to observe space in great detail. This was key to the development of The Big Bang. Hubbles Law, which describes how the galaxies appear to be moving away from us at speeds proportional to their distance. It's like the planets are accelerating out away from us. This was key to developing the big bang theory. This observation supports the expansion of the universe and suggests that the universe was once compacted and started somewhere. Is a view that the universe is always expanding but maintaining a constant average density, with matter being continuously created to form new stars and galaxies at the same rate that old ones become unobservable as consequence of their distance and velocity of recession. Similarities and Differences of Bigbang and Steady State theory This states that the Universe is infinite in extent, infinitely old and, taken as a whole, it is the same in all directions and at all times in the past and at all times in the future. In other words, the Universe doesn’t evolve or change over time. PERFECT