On Sept. 5, 1977, NASA launched a space probe named Voyager 1 into the cosmos. Nearly 45 years later, much to the delighted astonishment of astronomers throughout the world, it is still humming along as it travels far past Pluto.
In fact, Voyager 1 has traveled so far that it has left the bounds of our solar system — and now it is giving off strange readings that scientists are struggling to understand.
