They discovered, for example, that because the stirring affected the heat distribution, the optimal brewing temperature was 98 degrees Fahrenheit, while the optimal cooling temperature was 75.

WSJ: From Patents to Memberships, Coffee Shops Offer New Perks

But by mapping the tiniest of temperature fluctuations in the CMB, first done by the Cobe satellite in 1991, astronomers can "see" the distribution of matter in the early Universe.

BBC: Pictures of the early Universe