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The Light Year

The Light Year. One light year is the DISTANCE light travels in one year The speed of light is 186,000 miles per second (the highest possible speed) So, one light year is 6 trillion miles , or 6x10 12 miles in powers of ten notation That ’ s 6,000,000,000,000 miles.

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The Light Year

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  1. The Light Year • One light year is the DISTANCE light travels in one year • The speed of light is 186,000 miles per second (the highest possible speed) • So, one light year is 6 trillion miles, or 6x1012 miles in powers of ten notation • That’s 6,000,000,000,000 miles

  2. Zoomout to the nearest stars

  3. Finder chart for “M31” = the Andromeda Galaxy

  4. Andromeda Galaxy --- 2.5 MLY Away

  5. Lookback Effect/Lookback Time

  6. Milky Way Galaxy Locations (Slice/survey)

  7. HUDF Extract

  8. (Another) HUDF Extract at Full Resolution

  9. COBE Map of CMB Background Irregularities

  10. Milky Way Galaxy Locations (Slice/survey)

  11. Starburst galaxy with “wind”

  12. Virgo Cluster of Galaxies

  13. “Proton-proton” fusion chain reaction

  14. Nuclear burning zones inside a “red giant” star

  15. Remnant of stellar “supernova” explosion

  16. Remnant of stellar “supernova” explosion

  17. Disk around nearby star

  18. Protoplanetary disk around recently-formed star (artist’s)

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