1. Big Bang Theory Created by Evan Chernenko Click to Start

2. Big Bang Theory  The Big Bang Theory is, the universe started in one small area in space about 13.7 billion years ago and everything in space was created at the same time do to energy.  The Big Bang Theory was found by Edwin Hubble in 1929.  No one knows how the Big Bang was started, but one theory is, there was an explosion of energy.

3. Characteristics of an Expanding Universe  Hubble's proposal explains if the distance between galaxies increases the universe is expanding.  For example, the raisin bread baking in the oven, when the loaf rises the distance between the raisins gets bigger.  Red shift analysis shows that the wavelengths between the galaxies are stretched, therefore, the galaxies are moving farther apart.

4. Technologies Astronomers use to Advance our Understanding of the Universe  Spectroscope: Used to identify celestial bodies in distant galaxies.  An optical spectrometer is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials.  Hubble Telescope: Used to identify far galaxies and take pictures.  Hubble Telescope is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. With a 2.4-meter mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra.

5. Technologies Astronomers use to Advance our Understanding of the Universe  Satellite: Used to gather information from other planets.  an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.  Space Probe: Used to explore our solar system and other galaxies.  An unmanned spacecraft designed to explore the solar system and transmit data back to earth.  Planetary Rover: Used to explore the surface of planets and moons.  Is a space exploration vehicle designed to move across the surface of a planet or other celestial body.

6. Formation Characteristics of Galaxies  Spiral Galaxies: Have a center area which is surrounded by stars. The center area contains a black hole which is covered by dust and gases.  Elliptical Galaxies: Have not so much gas and dust, mainly made of older stars, they are wide in size and can be the biggest and smallest type of galaxies.  Lenticular Galaxies: Have a center area with a disk in it, but its not the same as a Spiral Galaxies.  Irregular Galaxies: Irregular Galaxies are usually formed by other galaxies hitting each other or from gravitational interactions between galaxies. They come in a lot of different type of shapes and sizes.

7. Astronomers Terminology  Cosmology: Is the scholarly and scientific study of the origin, evolution, large- scale structures and dynamics, and ultimate fate of the universe, as well as the scientific laws that govern these realities.  Electromagnetic: Relating to the interrelation of electric currents or fields and magnetic fields.  Electromagnetic Waves: Naturally occurring materials, by contrast, don't interact with the magnetic component of electromagnetic waves.  Cosmic Background Radiation: Is radiation left over from early development of the universe, and is a landmark proof of the Big Bang theory.  Radiation: The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.