Adding dark energy changes the equation that describes the speed at which the universe expands with time and the growth of density perturbations.

The observed motion was small, and we could not duplicate it without the presence of dark energy. When we added the dark energy, we got a perfect match.

We studied the properties of galaxies close to the Milky Way instead of looking billions of light years away. It's like traveling from Seattle to Portland, Ore., rather than from Seattle to New York, to measure the Earth's curvature.

Our vision is that we have to search for organic growth.

There is great potential for growth in Africa, as long as risk is controlled in the best way possible.

Because dark energy makes up about 70 percent of the content
of the universe, it dominates over the matter content. That means dark
energy will govern expansion and, ultimately, determine the fate of the
universe.