Currently, the Voyager couple - launched in 1977 - has flown many times farther than New Horizons, beyond the heliosphere, that is, out of the Sun's control.
But the advantage of New Horizons - nearly 30 years younger than the Voyager couple - is that it has many sophisticated scientific instruments and flies much faster.
Therefore, this NASA spacecraft promises to help Earthlings reveal more special details about the cold, dark space at the edge of the solar system, including things that the Voyager couple missed.
According to NASA, New Horizons has enough energy to operate until at least 2040 and they expect that by the end of this decade or early 2030s, it can fly across the heliosphere boundary, entering interstellar space. Star.