Spaceship Earth is one of Epcot's premiere attractions and is NOT to be missed. It does look like a giant golf ball, right? But wait until you step inside that iconic silver golf ball, and you'll be transported back in time 40,000 years ago. The ride celebrates the history of time and space and see how humans made significant progress through paper, books, newspaper, radio, telephones and computers. One of the coolest ride ever!
According to wikipedia:

Spaceship Earth is the iconic and symbolic structure of Epcot, a theme park that is part of the Walt Disney World Resort. One of the most recognizable structures at the Walt Disney World Resort, it is not only the centerpiece and main focal point of Epcot, but also the name of the attraction housed within the 18-story geodesic sphere that takes guests on a time machine themed experience using the Omnimover system.

Fun Facts:
- Spaceship earth is a 180-foot-tall geodesic sphere.
- Time machine rides have touch-screen computers which allow you to literally see yourself living, working and playing in the future.