Voyager 1 was launched on September 5, 1977. Sagan had pushed for Voyager to take a photo of the Earth when its vantage point reached the edge of the solar system. On February 14, 1990, having completed its primary mission, NASA commanded the spacecraft to turn around to photograph the planets of the Solar System.Between February 14, 1990 and June 6, 1990, one image Voyager returned was of Earth, showing up as a "pale blue dot" in the grainy photo