Somewhere between the precision of engineering and the patience of science, NASA's Nancy Grace Roman Space Telescope has crossed a quiet but consequential threshold — its instruments powered on for the first time, its mission suddenly twice as long as anyone planned. A discovery of unexpected fuel efficiency in orbit has extended the telescope's operational life from ten years to twenty-two, gifting researchers not just more time, but more chances to ask the universe its hardest questions. Dark energy, the invisible force stretching the cosmos apart, now has a longer-lived witness trained upon