I’M NOT SURE THAT’S A GOOD TURN OF PHRASE: Nasa’s Voyager 1 in ‘cosmic purgatory’ on verge of entering Milky Way. “It is about to become the first man-made object to leave the Solar System, although Nasa expects it to take between several months and years before it completely enters interstellar space. Voyager 2 will follow later.”

Last year I reviewed Stephen Pyne’s Voyager: Seeking Newer Worlds In The Third Great Age Of Discovery. I thought the book had flaws, but Pynes did a great job of explaining why the Voyager probes were such a great accompishment.