Quiz · Measuring the Expanding Universe

Question 1What discovery overturned the old belief in a static, eternal universe?

New maps of the oceans on faraway planets Light from distant galaxies stretching toward red The first photographs taken of the Moon A new kind of telescope built on mountains

Question 2According to the talk, how does a galaxy's distance relate to its speed?

All galaxies move at exactly the same speed Nearer galaxies move away much faster than far ones Distance has no connection to speed at all The farther away a galaxy is, the faster it recedes

Question 3What is the mysterious force driving the accelerating expansion of the universe?

Dark energy Solar wind Nuclear fuel Gravity assists