A look at how Voyager 1 and 2 escaped our solar system, and why it took more than just powerful rockets.
The boundary of a solar system is not defined by planets, but by gravity. Beyond Pluto and the Kuiper Belt lies the Oort Cloud, extending up to a light year from the Sun and still considered part of ...
LOS ANGELES -- Voyager 1 has crossed a new frontier, becoming the first spacecraft ever to leave the solar system, NASA said Thursday. Thirty-six years after it was launched from Earth on a tour of ...