Angels Are Real

Chances are you've heard about angels maybe many times without counting. Earthlings aren't new to the concept of angels, and they don't have to be Christians to have heard about these beautiful beings called angels. Or are they really beautiful? We'll get to know about it momentarily. I'm excited already!
So, the question is "What or who are angels?" Are they just another life force wandering the cosmos and doing things randomly, or is there more to them? I'm sure you've heard tales of angels' sightings in many places, but is it true?