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Understanding the Universe: From Its Origin to Our Place in the Cosmos

Explore the origins of the universe, from theories such as the Big Bang and expanding universe to the structures we observe today, including stars, planets, and galaxies. Discover our closest star, Alpha Centauri, just 4.37 light-years away, and the Andromeda Galaxy, our nearest cosmic neighbor at 2.5 million light-years. Learn about the local group of galaxies and the evidence supporting these theories, such as redshift and cosmic microwave background radiation.

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Understanding the Universe: From Its Origin to Our Place in the Cosmos

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Presentation Transcript

  1. RESOURCEs & EnvironmentCh. 1. planet earth

  2. 1-1. Origin of the universe • Universe? • Star+ Planets+ Satellites+ Comets+ (Asteroids) + Meteorites+ Dusts+ Gases . . . •  Star system • Star system+ Star system + … Galaxy • Galaxy+ Galaxy+ …  Local group + Local group + … Universe

  3. Alpha Centauri, the closest star to us (4.37 LY (light year) away: 1 LY = 1013 km) http://heasarc.gsfc.nasa.gov/docs/cosmic/nearest_star_info.html.

  4. Andromeda, the closest galaxy to us (2.5 MLY away) http://www.definity-systems.net/~apw/astro/galaxies.html

  5. Galaxies around us. The ‘local group’. http://www.definity-systems.net/~apw/astro/galaxies.html.

  6. Theories of the Origin of the Universe • Stationary Cosmology • Expanding Universe Theory • Steady State Cosmology • Big-Bang Theory • Evidences • RED SHIFT • CMBR (COSMICMICROWAVE BACKGROUND RADIATION)

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