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Cosmology How did our universe form?
The study of the universe – its nature, origin and its evolution
Big Bang Theory Theory that the universe began as a point and has been expanding ever since About 13.7 billion years ago EXPANSION rather than an explosion
Steady State Theory Universe looks the same on large scales to all observers Matter is added to created and added as universe expands Density remains the same
Possible Outcomes* Open Universe – Expansion will never stop Closed Universe – Expansion stops and turns into contraction Flat Universe – Expansion slows to a halt * Based on Big Bang Model
Background Noise Cosmic background radiation: –Weak radiation left over from the early hot stages of the Big Bang expansion of the universe Discovered in 1965 in a lab in Holmdel, New Jersey
Background Noise Continued… Average temperature of CBR is K (-270°C) Earths atmosphere blocks most of the radiation. Best seen by satellites or high altitude balloons
COBE Cosmic Background Explorer –Orbiting observatory used to map radiation in detail (1989) WMAP: Wilkinson Microwave Anisotropy Probe (2001)
On your own… Questions 4-8
30.3 Big Bang Theory. Doppler Effect Doppler effect = apparent shift in the wavelengths of energy emitted by an energy source moving away from or towards.
Objectives Distinguish the different models of the universe. Compare and contrast how expansion is relative to each of the models. Explain the importance.
Cosmology- the study of the origin, evolution and composition of the universe.
Bell Ringer 8/25 You may write this week’s bell ringers on the same paper as last week’s bell ringers, just be sure to include the correct DATE!! In your.
Chapter 18: Chapter 18: Cosmology. WHAT DO YOU THINK? What does the Universe include? Did the Universe have a beginning? Is the Universe expanding, fixed.
Steady-state, inflationary, open universe, closed universe, Geocentric, Heliocentric theories.
Theories of how the Universe Began. Big Bang Theory Scientists believe Universe started with a big explosion 15 billion years ago Matter, gravity,
Big Bang Theory – A History 1927: Belgian priest Georges Lemaître proposes that the universe began with the explosion of a "primeval atom". Einstein develops.
The Big Bang Astrophysics Lesson 18. Learning Objectives To know:- What is the big bang theory What is the evidence supporting it including:- Cosmological.
THEORIES OF UNIVERSE FORMATION. Studying Space Cosmology – the study of the origin, structure, and future of the universe Astronomers study planets, stars,
10.2 Big Bang Theory By Sunny and Austin The big bang theory By the end of section 10.1 you should be able to understand the following: How Edwin.
THE BIG BANG THEORY. STATES THAT THE UNIVERSE BEGAN AS A SINGLE COSMIC EXPANSION ABOUT 15 BILLION YEARS AGO. THE BIG BANG THEORY.
The Big Bang: Fact or Fiction? The Big Bang Fact or fiction? Dr Cormac O’Raifeartaigh.
UNIVERSE CHAPTER BIG BANG The big bang theory is the main cosmological model for the earliest known time of the Universe. It shows us how the universe.
Formation of the Universe. Taken from the Hubble Space Telescope
How the Universe got its Spots Edmund Bertschinger MIT Department of Physics.
The Universe Through Time: The Big Bang. The Universe Through Time: The Curvature of Space.
Wilkinson Microwave Anisotropy Probe (WMAP) By Susan Creager April 20, 2006.
#4 The galaxy in which Earth is located is the: A. Andromeda B. M87 C. Milky Way D. Magellanic.
Evidence to Support the Theory 2.Cosmic Background Radiation In 1965 Arno Penzias and Robert Wilson were using a new microwave antenna with the intention.
The theory of the universe. Expanding of our universe In the 1920s, astronomers had the technology to see more Celestial bodies with advance telescope.
Discovering the Universe Eighth Edition Discovering the Universe Eighth Edition Neil F. Comins William J. Kaufmann III CHAPTER 18 Cosmology Cosmology.
STATES THAT THE UNIVERSE BEGAN AS A SINGLE COSMIC EXPLOSION ABOUT 15 BILLION YEARS AGO. THE BIG BANG THEORY.
1 of 18 Formation of the Universe. 2 of 18 3 of 18 What is the Big Bang theory? The Big Bang Theory states that the Universe began 13.6 billion yrs ago.
Chapter 30 Section 4 Handout The Big Bang Theory.
To do: Run through the ppt on Big Bang and Cosmology (resources.faulkes-telescope.com > GCSE Astronomy > Class Exercises > Cosmology Complete the following.
AS2001 Chemical Evolution of the Universe Keith Horne 315a
FORMATION OF THE UNIVERSE CHAPTER 15 – 4 Part 1. THE BIG BANG THEORY To understand how the universe was formed, scientists study the movement of the galaxies.
Milky Way Galaxy. Galaxy A group of stars, dust and gases held together by gravity. 170 billion galaxies in the universe 200 billion stars in a galaxy.
Cosmology -- the Origin and Structure of the Universe Cosmological Principle – the Universe appears the same from all directions. There is no preferred.
BIG BANG. EVIDENCE FOR BIG BANG Hot Big Bang Model: The universe began expanding a finite time ago from a very dense, very hot initial state. Dense Dense.
Thursday, April 8 th Agenda Finish Section 18.1: The Universe Origin of the universe, red shift, big bang theory In-Class Assignments Section 18.1.
Big Bang Theory. Cosmology Study of deep space and the dynamics of universe other galaxies stars (nebula, supernova…) origin of the universe black holes.
Exploring the Universe Modern telescopes: Image is magnified Star formations can be seen with EM waves other that visible light Attached to computers –
Chapter 18: Chapter 18: Cosmology. WHAT DO YOU THINK? What does the universe encompass? Is the universe expanding, fixed in size, or contracting? Will.
Cosmology The Origin and Future of the Universe Part 2 From the Big Bang to Today.
MAPping the Universe ►Introduction: the birth of a new cosmology ►The cosmic microwave background ►Measuring the CMB ►Results from WMAP ►The future of.
Notes 30.4 The Big Bang Theory Std 2g: How the red-shift provide evidence for the “big bang” model that suggests that the universe has been expanding for.
AS2001 / 2101 Chemical Evolution of the Universe Keith Horne Room 315A
Theory on the Formation of the Universe. Popular Theories Steady State Theory - theory suggesting that the universe & everything within it is unchanging.
Cosmology The Origin, Evolution, and Destiny of the Universe.
Homework for today was WORKBOOK EXERCISE: “Expansion of the Universe” (pg in workbook)
By: Lidia Moscoso, Lucia Vicario, Tania Martin and Paula Moreno THE BIG BANG THEORY.
The Big Bang Theory By James L. Barker. Big Bang Theory Today the Big Bang Theory is the dominant scientific theory about the origin of the universe.
Introduction to Astrophysics Lecture 18: Cosmology: the Hot Big Bang.
THE BIG BANG THEORY. BACKGROUND billion years ago -Georges Lemaitre proposed what became known as the Big Bang Theory of the universe -cosmological.
Galaxies and the Universe Ch 25 Section 3. What are the objects in the sky? GALAXIES! Groups of stars, dust, and gases held together by gravity.
THEORIES OF THE UNIVERSE. FLAT EARTH THEORY Date: Ancient Times Scientists: Babylonians, Egyptians Theory Description: The world is a flat disk, not.
10.1 Spectroscopy and the Big Bang. Electromagnetic Spectrum.
Galaxies and Cosmology / Types of Galaxies Spiral –Including Barred Spiral Elliptical Irregular.
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