Every star in this movie has been waiting for it. On June 30, a 3,200-megapixel camera on a Chilean mountain began filming the southern sky, one frame every forty seconds, for ten years. The Vera C. Rubin Observatory calls it the greatest cosmic movie ever made. The light it catches left some galaxies billions of years ago and arrives now, on schedule.
The largest camera ever built, it will revisit every patch of sky about 800 times over the decade: ten terabytes a night, seven million alerts when something moves, flares, or dies. Before opening night it found eleven thousand new asteroids in six weeks. That was the rehearsal.
The observatory is named for Vera Rubin, who proved galaxies spin like they hold more than we can see, and who was once refused Palomar's great telescope for lack of a women's bathroom. She waited a long time to be let in. This camera waits the way she did: patiently, and it keeps everything it sees.
Ten years from now there will be a film of everything that changed in the southern sky. Buried in it, the light that waited for us to invent a way to watch.
NSF's acting director, Brian Stone: “Today, we begin filming the greatest cosmic movie ever made.”
Galaxy 3C 345 aims its jet at us, a lighthouse aimed on purpose. Plasma streams off its black hole at 98 percent of light speed. Because the beam points almost straight at us, its knots appear to outrun light. The universe's speed limit, apparently broken. It isn't. The jet is chasing its own light.
The light has traveled for nearly six billion years. It left before Earth existed. We watched anyway: 116 visits from 1995 to 2022, dishes from Hawaii to the Caribbean, each a still from a film we couldn't run. Five decades of patience.
Now the film runs. A team including Katherine Bouman, of first-black-hole-picture fame, built kine. It treats the sky as continuous in space and time, filling in the gaps between visits. The result: a movie you can pause at any instant. For the first time it measures the plasma's flow, not just the knots' drift. The river, not the floats.
The same tool is aimed at Sagittarius A*, our galaxy's central black hole. The first video of a black hole is on its way, and it's the one we've circled all along.
We waited nearly six billion years for this light. Then we made it move.
Foschi et al., Nature, Aug 2026. nature.com/articles/s41586-026-10988-5