- Life on the Mississippi is a memoir by Mark Twain of his days as a steamboat pilot on the Mississippi River before the American Civil War published in 1883. It is also a travel book, recounting his trips on the Mississippi River, from St. Louis to New Orleans and then from New Orleans to Saint Paul, many years after the war.
- Multiverse (Wikipedia)
The multiverse is a hypothetical group of multiple universes. Together, these universes are presumed to comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them. The different universes within the multiverse are called “parallel universes”, “other universes”, “alternate universes”, or “many worlds”. One common assumption is that the multiverse is a “patchwork quilt of separate universes all bound by the same laws of physics.”