A version of this story appeared in Science, Vol 388, Issue 6753.Download PDF Cerro Pachón in Chile—You can tell the giant telescope is built for speed. The steel mount that holds the mirrors is squat and stout but also lightweight, so it can move fast and stop quickly. A bank of heavy-duty capacitors below the mount is poised to deliver a powerful impetus to motors that swivel the telescope. The camera at its heart is fast, too, capable of spitting out a 3200-megapixel image from each exposure ...