He did this by relating the light-year to the Astronomical Unit â the Earth-sun distance. One Astronomical Unit, or AU, equals about 93 million miles (150 million km). Another way of looking at it: the Astronomical Unit is a bit more than 8 light-minutes in distance. A light beam takes 8 minutes to travel the 93 million miles (150 million km) from the sun to the Earth.
Lake Superior sits between Ontario, Canada and New York. Lake Ontario is mainly fed by the waters of Lake Erie, which are transported via the Niagara River. Lake Ontario drains into the St. Lawrence River. Lake Michigan is the third largest of the Great Lakes and the only one entirely within the United States.
The Great Lakes The Great Lakes are the five largest lakes in the United States and include Lake Superior, Lake Huron, Lake Michigan, Lake Erie, and Lake Ontario. They are located in the northern Midwest along the border between the United States and Canada. Of the five lakes, only lake Michigan is located entirely in the United States. There are eight states that have shoreline on at least one of the Great Lakes including New York, Michigan, Pennsylvania, Ohio, Indiana, Illinois, Wisconsin, and Minnesota.