1 / 13

The Universe

The Universe. What’s in it?. The Universe. planets moons stars solar systems galaxies nebulae empty space more?. What’s wrong with this model of the universe?. Universe. Galaxies. Solar Systems. Nebulae. Planet. Star(s). Moons. It is not to scale. Nebulae.

daire
Download Presentation

The Universe

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Universe

  2. What’s in it? The Universe planets moons stars solar systems galaxies nebulae empty space more?

  3. What’s wrong with this model of the universe? Universe Galaxies Solar Systems Nebulae Planet Star(s) Moons It is not to scale.

  4. Nebulae • Interstellar cloud of dust and gasses • Birthplace of stars

  5. Galaxies • collection of stars, gas & dust held together by gravity • millions of galaxies are known to exist • galaxies can contain from hundreds of thousands to one trillion stars • 3 major types

  6. Galaxies: The Three Types • Spiral galaxies • spiral arms made of stars • barred spiral - has two or more long arms extending away from the central “bar” cluster of stars • Elliptical galaxies • no spiral arms and no flattened disk (think football) • Irregular galaxies • have no regular shape

  7. Milky Way • Spiral galaxy (Barred-Spiral) • 100,000 light-years in diameter. • contains about 200 billion stars • Home to Our Sun • the Sun and Earth are located 2/3 away from center in one of the outer spiral arms • Sun orbits central Milky Way at about 235 km/s around the center of the galaxy You are here!

  8. Andromeda Galaxy • nearest galaxy neighbor • about 2.5 million light years away • 120,000 light years wide • A spiral galaxy • The largest galaxy in our local group of galaxies

  9. So Where Did It All Come From? Scientifically believed origins: • Big Bang • Oscillating Universe • Geocentric Model • Heliocentric Model

  10. Big Bang • The universe was created from one, instantaneous, large explosion outward • most widely scientific accepted theory of the origin of the universe

  11. Oscillating Universe • states that the universe grows outward until gravity pulls it back to the center and then expands outward over and over again

  12. Geocentric Model • states all celestial bodies orbit the Earth

  13. Heliocentric Model • states all objects in our solar system circle the Sun.

More Related