Expansion Of The Universe

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introduction to redshift

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  • Expansion Of The Universe

    1. 1. Expansion of the Universe 11/13-14/07 Ms. Shinkle
    2. 2. Edwin Hubble’s Findings <ul><li>Observed atomic spectra from stars </li></ul><ul><li>Atomic spectra from stars shifted from expected </li></ul><ul><li>More shift from galaxies further away </li></ul>
    3. 4. Red Shift & Blue Shift <ul><li>If source receding, waves red-shifted </li></ul><ul><li>If source approaching, waves blue-shifted </li></ul>
    4. 5. What Red-Shift Means <ul><li>All galaxies moving away from each other </li></ul><ul><li>More shift means greater velocity </li></ul><ul><li>Distant galaxies moving faster </li></ul>
    5. 7. Dark Matter & Other Mysteries <ul><li>Evidence of more gravity than matter that can be seen </li></ul><ul><ul><li>Dark Matter </li></ul></ul><ul><li>Expansion of galaxies seems to be speeding up </li></ul><ul><ul><li>Dark Energy </li></ul></ul>
    6. 8. What’s in the Universe                                       

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