Lately, I have become quite interested in how the astronomy field has begun to determine that water can be found almost anywhere. And since it is the second most common molecule in the galaxy, at least here, I became intrigued with how it gets around so easily. This brings me to Dr Louis Frank, from the University of Iowa. Since the late 80s, he and some others have stated that they believe the presence of small comets are continually entering the earth's high atmosphere and seeding our planet with enough water to raise the level of water one inch every 20,000 years. There is quite a bit of information on the internet about this, but strangely, around 2000, the information comes to a halt. Not only that, but is seems that it is not entirely an accepted theory among the science community. This speech by Dr Frank, in 1999, seems to suggest that the debate is closed, yet I simply cannot find anything else since 2000. Does anyone have any more links, or information on this intriguing concept. I am inclined to agree with this theory, but I am a bit skeptical in concurring with the total number of small comets hitting the earth's atmosphere on a daily basis, as Dr Frank believes. The reason why this is important is that should there be so many small comets whirling around the solar system, traveling from one point to another, it could be quite dangerous. The odds of hitting one of these would be high. However, with that much water floating around, we would have no trouble finding enough to sustain us. Anyone know about this?