Grids and variables are used to find coordinates. Latitude and longitude coordinates
Turkey. Historically, Iran was the centre of the Persian Empire, while Turkey was the centre of the Ottoman Empire.
<span>The correct answer is D - Saturn. Astronomers have known about Saturn's rings since Galileo first spotted them through his telescope in 1610. We've learnt a lot more about them since then, though, for example, we now understand that they are build from billions of different ring particles.</span>