planetarium. dr. pitts, we saw a couple weeks ago, mid-february, the 15th, that meteor right that came crashing to earth over russia, scared so many people, hurt a bunch people, broke windows. now we have this comet coming nearby. are we seeing more of this space activity or are we getting better at finding it? >> well, i think you're right on count number two. we're getting better at fining it and we're getting better at seeing it. from what we saw of the asteroid last month. so many people had dashboard cams that gave us great views. it is more so we're getting better identifying these things and letting people know about it, we have such a great network of communication these days. jon: a comet is mostly ice and gas, right? is it, if one were to hit the earth would there be at kind of impact we saw from the asteroid? >> well it could be devastating if one did hit the earth. even though they are made of gas, they are also bound up with rock and dust and dirt