Download - Expansion Of The Universe
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Expansion of the Universe
11/13-14/07Ms. Shinkle
Edwin Hubble’s Findings• Observed atomic spectra from
stars• Atomic spectra from stars shifted
from expected• More shift from galaxies further
away
Red Shift & Blue Shift•If source receding, waves
red-shifted•If source approaching,
waves blue-shifted
What Red-Shift Means•All galaxies moving away
from each other•More shift means greater
velocity•Distant galaxies moving
faster
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
What’s in the Universe