European adventurers found themselves within a watery world, a tapestry of streams, channels, wetlands, lakes and lush riparian meadows enriched by floodwaters from the Mississippi River.

Another important problem in cosmology is: Why is the nightsky dark? It has, in fact, been said that we could use this observation to show that the universe is expanding. We now realize that this isn’t true. The well-known early astronomer Johannes Kepler was the first to see that there was a difficulty with the dark nightsky. To him, the problem centered around whether or not the universe was infinite. If it was infinite, Kepler was sure the nightsky should be bright.

A high thrust-to-weight ratio helps a rocket to overcome the effects of gravity drag.

The camerapersons stand on their towers and watch the ground crew try to get rid of the water.