2. Andromeda Galaxy – Galaxy closest to ours 2.5 Million light year away

3. Intro to astronomy youtube http://www.youtube.com/watch?v=D8zZZZ zppIMhttp://www.youtube.com/watch?v=D8zZZZ zppIM

4. Light year Distance Light travels in one year in a vacuum Equals 300,000 km/sec or 186,000 mi/sec A light year is about 6 trillion miles long

5. Crab nebula

9. Universe Current Theory of Origin – Big Bang All matter and energy was once together in one point and exploded in all directions forming the universe Age - 10 – 16 Billion Years

11. Big Bang Evidence 1. Cosmic Background Radiation – Residual energy (or faint microwave radiation) found all over in space due to the cooling of the fireball, energy is the echo of Big Bang

12. http://www.youtube.com/watch?v=Kg9F5p N5tlIhttp://www.youtube.com/watch?v=Kg9F5p N5tlI http://www.wwnorton.com/college/astrono my/21st-century-astro3/astrotours.aspxhttp://www.wwnorton.com/college/astrono my/21st-century-astro3/astrotours.aspx

13. Doppler Effect

14. Big Bang Evidence Longer wavelengths Shorter wavelengths

15. Big Bang Evidence If shifted towards the UV, its blue shifted If shifted towards the IR, its ree shifted 2. Every object in universe is red shifted Meaning the universe is expanding

19. Doppler Effect

20. http://www.youtube.com/watch?v=Fhfnqbo acV0http://www.youtube.com/watch?v=Fhfnqbo acV0 http://www.youtube.com/watch?v=J43lAE SftPshttp://www.youtube.com/watch?v=J43lAE SftPs

21. http://www.youtube.com/watch?v=fgg2tpU VbXQ&feature=channelhttp://www.youtube.com/watch?v=fgg2tpU VbXQ&feature=channel