We got ourselves all excited for NASA's Mars press conference today, even though we already knew it wasn't about life on the red planet, but what we should have been paying attention to was happening nearly 11.5 billion miles away in the heliosphere. The Voyager 1 spacecraft has encountered a new region of our solar system. What's even more exciting is that NASA scientists believe this region is the final barrier between Voyager and interstellar space. That's so much more impressive than chlorine on Mars.