Somewhere between Earth and the deep dark, a $4 billion eye opened for the first time and returned light from distant stars — proof that humanity's latest instrument for reading the cosmos is alive and watching. NASA's Roman Space Telescope, carrying the largest camera ever sent to space, completed its first light test this week while also revealing that its first orbital maneuver consumed a fraction of the fuel anticipated, a quiet arithmetic that transforms a ten-year mission into one that may last more than two decades. In the long tradition of telescopes that have reshaped our understandin