THE THIRD KIND [GREEN]

I can come from here, there, anywhere— maybe on a boat or perhaps a spaceship. Sometimes I feel like my tribe exists on another planet. 
_ _ _ _ _ . Read below for the riddle.

1. You’ll find me inside the @ symbol.
2. To live, to laugh, to love, to learn. I’m part of all of these.
3. It is not you or me but     .
4. You don’t have to be Einstein to figure out the fourth:
                                                                              =mc².
5. I am the fourteenth of the one we all know.

 Check out the products we have available in The Third Kind here.