Voyager spacecraft head for interstellar space

Voyager spacecraft head for interstellar space: "The last time we checked on the Voyager 1 & 2 they were hurtling towards the edge of the solar system at over 37,000 mph (60,000 km/h). The car-sized spacecraft are now and incredible 11 billion miles (17 billion km) and 8 billion miles (14 billion km) from Earth respectively - they are the longest continuously operated spacecraft in deep space and, having traveled further than any man-made object, they will soon become the first to enter the realm of interstellar space."