NASA’s Voyager 2 probe is currently on a journey toward interstellar space. The spacecraft, launched in 1977, is approaching the edge of the solar system, according to a NASA statement. Voyager 2 is little less than 17.7 billion km away from Earth — or more than 118 times the distance from earth to the sun.

Click Here: Golf special

It is the only spacecraft to visit all four giant outer planets — Jupiter (1979), Saturn (1981), Uranus (198 ) and Neptune (1989).

Voyager scientists have been watching for the spacecraft to reach the outer boundary of the heliosphere, known as the heliopause.