In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid is in a turbulent flow regime. The moving fluid creates a space devoid of downstream-flowing fluid on the downstream side of the object. Fluid behind the obstacle flows into the void creating a swirl of fluid on each edge of the obstacle, followed by a short reverse flow of fluid behind the obstacle flowing upstream, toward the back of the obstacle. This phenomenon is naturally observed behind la
Opened on January 15, 1975, Space Mountain is the oldest operating roller coaster in the state of Florida, and is the original version of the iconic attraction that has since been replicated at all of The Walt Disney Company's Magic Kingdom-style theme parks worldwide, except for the Shanghai Disneyland Resort.
On June 18, 1983, Sally Ride became the first American woman in space when the Space Shuttle Challenger launched from NASAâs Kennedy Space Center in Florida. The crew consisted of astronauts Robert Crippen, commander; Frederick H. Hauck, pilot; and mission specialists â Sally Ride, John Fabian and Norman Thagard.