What university do you go to? http://xxxnx.fun/fbb-pormhub/ wwwwxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "Comets are rich in water. One theory is that they may have impacted in large numbers in the past - since they would have been more numerous back then - and could have delivered enough water to fill Earth's oceans. And they may even have delivered organics. These are the things we'd like to understand with Rosetta."