Voyager 1 enters interstellar space. Credit: NASA

Voyager 1 enters interstellar space. Credit: NASA

Voyager 1 enters interstellar space. Credit: NASA

Download Original: 630 × 360 Space 2013: Another Great Year of Cosmic Adventure

Voyager 1 enters interstellar space. Credit: NASA

Voyager 1 enters interstellar space. Credit: NASA 24 December,2013Ben Burress