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