@kaia_ I'm sure you must be able to speak very well, you seem to have good representation skill but what I meant is that you can learn about the formats of conferences, their way of approach towards the cites, what research references do they give and how important is it inorder to get it approved. I'm sure that stage will come in your life, just keep learning and have patience you will do good.
There are numerous impact craters on the earth. Today there are fewer, because the atmospheric density creates friction on the surface of the falling objects causes them to evaporate or explode, therefore smaller pieces fall than in the past, when the atmosphere was still "young" and even more heavy. 🙂