The solar system includes moons (and some of those moons have moons), supernova explosions, comets, meteors, asteroids, and plain old space dust. To be sure, there are more objects in our solar system, some of which have yet to be discovered.
The canal was not complete in 1825, however. Many years after opening, people decided the canal needed to be a bit wider and larger. People wanted to connect more waterways to the Erie Canal in order to get full use out of the canal system. So, between 1836 and 1862 the Erie Canal was made wider and was connected to other canals.
With the new plan, construction began in 1920 and lasted until 1925, when the $6,000,000 ran out. During that time, two miles of 26-foot wide subway tunnel were built where the canal had been, and then covered by a new street, Central Parkway, creating a major thoroughfare for aboveground traffic.