An American spacecraft flew by Pluto on Tuesday morning to have a look around. That sentence was the stuff of science fiction when most of us were born. And that's not all. Last November, a European spacecraft landed on a comet. On a comet speeding through space! We've also been poking around Mars, and at the end of April a pathbreaking NASA mission to Mercury ended after four years of orbiting that planet. Meanwhile, here on Earth, there is a lot of head scratching about how to get more American kids interested in science, technology, math and engineering – the vaunted STEM subjects.