Select the option that best completes the following sentence. The discoveries of Slipher and Hubble revealed that:most galaxies are moving towards a common pointmost galaxies are getting further away from us, moving faster the further away they aremost galaxies are getting further away from us, all at about the same speedgalaxies stay in fixed positions

Hubble discovered that ... *1 pointGalaxies are all moving away from us at the same speedGalaxies that are closer to us are moving towards usGalaxies that are closer to us are moving away from us fasterGalaxies that are closer to us are moving away from us slower than those farther from us

Select the option that best completes the following sentence. Einstein's general theory of relativity explained the observed redshift of galaxies by proposing that:light is always redshifted when it travels through spacethe empty space between galaxies is expandingan anti-gravitational force pushes galaxies apartgravitational waves cause galaxies to move around

Hubble discovered that more distant galaxies have greater redshift (greater recession velocity).Group of answer choicesTrueFalse

According to Hubble's Law, the greater a galaxy's redshift, theGroup of answer choicescloser it is to us.faster it's approaching us.younger it is.farther it is from us.greater its mass.

What does Hubble's Law tell us about the Universe?Group of answer choicesIt's expandingIt's contractingIt is staying the same sizeWe don't know