Let's reverse engineer the Universe

There is four times more dark matter and over fifteen times more dark energy than regular matter in the universe. And we have absolutely no idea what these invisible dark substances might be. This talk will show how we know that dark energy and dark matter exist, although we cannot see them directly. This kind of reverse enigneering of the universe already revealed some interesting features of the dark parts. However, the true nature of dark matter and dark energy are literally in the dark.