What is the name given to a person who studies stars, planets, and other objects in the sky?

well it depends i think people around the world are coming around to gay marriage. but if you are talking abortion then wow, so much to talk about. such as men thinking they have the right to choose if women can, the fact there are health concerns if the women can't get one, and many more arguments to discuss. so i would definitely say abortion would be a much more interesting topic.

okay what's the question?

permafrost layer, it exists beneath a layer of soil, rock or sediment.