Sometimes I'm wondering where to ask some "silly" questions about astronomy, and on the other hand where to answer at some "silly" questions... According to astronomers, there are no "silly" questions. I agree of course. Nevertheless I know persons, adults and children, who don't ask certain questions, thinking they are "silly"... If it's just a lack of knowledge, it's not a problem. Here is the purpose of this topic !
Examples of questions ans replies :
Q : Why don't we see stars through the clouds with a telescope ?
R : Because the power of a telescope can't erase the fact that a cloud is opaque, and the light can't go through it, even with a powerful telescope.
Q : Why is it very dangerous to see the Sun directly with the eyes ?
R : Because retinae have no nerves, so if you have the sunlight on them, they "burn" because you feel nothing ! And you can go blind !! It's the pain that indicates at the body to stop a dangerous thing.
Et caetera... You can ask and reply if you think you have the right answer.
Let's go !!