Chromoscope shows you the view of the Universe that we get from Earth. The view is mostly dominated by our galaxy - The Milky Way - which is the band running horizontally across the middle. The direction of the centre of the Galaxy is, appropriately, in the centre of the screen. All the stars, and many of the nebulae you can see are also in the Milky Way. Some of the objects you can see in visible light are far beyond our own galaxy. With other types of light you can see objects far across the Universe and even see light that set off shortly after the Big Bang.
Via Dr. Stefan Gruenwald