A long-running National Aeronautics and Space Administration (NASA) spacecraft that has been exploring the edges of the solar system has entered new territory, the U.S. space agency said Monday. NASA said the Voyager 1 spacecraft is in a new region of the solar system that is different than what it has been studying the past five years. New evidence presented at a meeting of the American Geophysical Union in San Francisco, California shows Voyager 1 has reached a point where the sun has little influence. Voyager 1 still has farther to travel before it exits the solar system and enters interstellar space, or the space between stars. Launched in 1977, Voyager 1 and its twin, Voyager 2, are flying in opposite directions toward interstellar space.