It is the letter "E".
I may seem real but it always turns out I was never there in the first place… you only see me during a certain resting stage. What am I ??
I am the first on Earth, The second in Heaven, I appear two times in a week, you can only see me once in a year Although I am in the middle to the sea. What am I?
I am the only thing that always tells the truth, I show off everything that I see; I come in all shapes and sizes, So tell me what I must be!