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The world's largest ever digital camera has become [operated / operational] in an observatory in Chile. The Large Synoptic Survey Telescope camera was [funded / fended] by U.S. government agencies. The enormous device was [installation / installed] in the Vera C. Rubin Observatory in the South American nation. Astronomers will now [commence / commerce] a period of testing. They will use the camera to observe the southern hemisphere skies over the [next / past] decade. The Department of Energy's Office of Science commented on [what / how] momentous the completion of the telescope was. It called the camera "a triumph [off / of] science and [engineers / engineering] ". It added: "We look forward to [seeing / seen] the unprecedented images this camera will [product / produce] ."

The camera is the size of a small car and [weights / weighs] 2,721 kg. It has a massive 3-billion-pixel sensor. In comparison, today's top-of-the-[range / ranch] smartphone cameras have 200 million pixels. Astronomers will repeatedly scan [a / the] sky to take time-[elapse / lapse] of space. Lead researcher Aaron Roodman said: "We [like / liking] to say that we're going to make a colour movie of the [every / entire] Southern Hemisphere sky." In [particular / peculiar], he hopes to capture images that will shed [dark / light] on how galaxies formed. Roodman's team will also investigate [dark / light] matter – the invisible substance that makes up a significant portion of the universe. In addition, the camera will [map / diagram] our Milky Way galaxy in greater detail than ever before.