The world's largest telescope continues to take shape on the Cerro Armazones mountain in Chile's Atacama Desert.
In a recent update describing the progress of the construction of the Extremely Large Telescope (ELT), the European Southern Observatory (ESO) shared a photo of the dome that will protect the telescope, which appears almost fully outfitted in its protective metal exterior. According to an ESO statement accompanying the photo, the dome is so large that it will take quite a while to walk from its entrance up to the top.
