English: This Picture of the Week shows the Milky Way flowing over its future spectator, ESO’s Extremely Large Telescope (ELT). As the light of the Milky Way band appears to pour into the ELT, the enormous cranes around it seem to do the same while they further advance the telescope. Once the assembly is complete, the soon-to-be largest telescope in the world will be breaking down the light above in unparalleled detail. The very bright and orange patch in the Milky Way right above the open dome is the core of our galaxy, with its filamentary dark clouds of gas and dust. The stars in the Milky Way centre look redder partly because they are older and partly because dust reddens them, similar to how particles in our atmosphere make the Sun look red at sunrise or sunset. Focussing back down on Earth, the ELT will scrutinise the pristine night sky above the Chilean Atacama Desert with unprecedented precision. It will help us learn more about the close environment of Sagittarius A*, the supermassive black hole at the centre of our galaxy. It will analyse the atmospheres of exoplanets, answer questions about the births and deaths of stars we yet cannot even begin to ask, and explore how galaxies form and evolve, among many other exciting questions. We eagerly await the mysteries of the cosmos the world’s biggest eye on the sky will unveil.