For many years, government space agencies were the only way humans could leave Earth and explore space. Today, however, laws have changed, and new companies are each hoping to be the first to make space exploration a successful business. Learn about the history of space exploration and how things have changed to allow private companies the opportunity to venture into space. Find out about the companies making private space exploration a new reality-whether for tourism, scientific exploration, or profit. Maybe one day you, too, could be a space tourist!