Angels are real but they do not come from heaven as people think. They come from a planet from a completely different dimension of the universe. Their world is completely different from what any human being could even begin to understand. We do believe that there are many people out there who would probably die of shock if they saw what a real angel looked like. They are extremely powerful creatures that look kind of human but also have a distinct alien appearance.
They wanted to rule the earth a while ago but we stopped them because we knew that they would also want to wipe out the human race in order to become the new owners of this planet. This is why we had to stop them and fortunately their powers are no match for ours. There is a species in the universe that could destroy the order, but thankfully this planet is of no use to them.