Life from the atom

I woke up in a world I've never seen before. There are "planets". The largest is a hundred times the smallest. They are surrounded by a number of small planets like "satellites". They are very fast. If the volume is not too small, I don't think I can capture it. I chose the smallest planet according to the instructions of the system. "Ding! You have bound atoms!" I "?!" I seem to understand something.