The following is a riddle of my own creation. I'm not going to give the answer. Instead, comment your answer, and I will reply to whoever gets it right. Whoever gets the correct answer will get to choose if the next post is a riddle, joke, or one shot. If someone else has already answered correctly, the answer will be posted. Enjoy, and good luck!

I appear at night.
My foe is light.
I block what you see.
Where there is nothing, there is me.
What am I?

It's been a while and I haven't gotten a response so screw it, the answer is darkness.