Voyager 1 spacecraft: old yet unstoppable
The spacecraft Voyager 1 has reportedly entered uncharted territory where the sun's powerful domain ends and the vastness of interstellar space begins. Essentially, it's the first human-made machine to leave the solar system.
At least that's what some astronomers who have been monitoring the aging spacecraft believe. Others aren't sure it's made it quite that far. But the bottom line is, Voyager 1 has traveled where no man or space probe has been before.
And just in case it runs into extraterrestrial beings, the spacecraft can provide an array of Earth photographs and entertainment, including Chuck Berry's "Johnny B. Goode."
Launched in 1977, this unmanned spacecraft has explored Jupiter and Saturn and is likely to keep going until 2020. We can't wait to hear what new frontiers lie in its path.