Answer:
If two is company and three is a crowd, what is four and five?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
I'm not alive and yet I grow. Just put me next to where it glows. A favorite in summertime best with friends when combined
I am milky white and scares people.
I am the beginning of eternity the end of time and space the beginning of every end the end of every place.
When is it bad luck to see a black cat?