The wavelength of light from objects moving away from us is shifted to ____ wavelengths.Redshift is defined as the ____ in wavelength divided by the emitted wavelength. For ____ moving galaxies, redshift is equal to the ____ of the radial velocity of the galaxy to the velocity of light.Hubble's Law shows the ____ velocity of a galaxy varies directly with its ____ from us. The ____ of the Universe can be estimated from Hubble's Law.Gravity is the force that slows down the ____ rate of the Universe.Mass that cannot be 'seen' is dark ____.The increase in the expansion rate of the Universe is due to dark ____. The ____ wavelength is ____ for hotter objects than cooler objects.The Universe ____ as it expands.CMBR stands for ____ ____ ____ Radiation

Expanding Universe Summary

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