On this day in 2016, an Atlas V lifted off from Cape Canaveral carrying a spacecraft with an errand: go to an asteroid, touch it briefly, and bring a little of it home. That's OSIRIS-REx in the photograph below, with two birds crossing the frame as if they'd been asked to pose.
The target was 101955 Bennu, roughly half a kilometre across — a loose heap of rock and gravel held together mostly by its own faint gravity, which is to say by a whisper. The second image shows it: no smooth surfaces, no obvious place to set your foot. OSIRIS-REx arrived in late 2018, spent two years mapping every boulder, and in October 2020 reached down with an arm, puffed nitrogen at the surface for a few seconds, and backed away. That was the whole visit. Seconds of contact after years of travel.
The capsule came down in the Utah desert in September 2023 with about 120 grams inside — roughly a small apple's worth of the early Solar System, carbon-rich and older than the ground you're standing on. The spacecraft itself didn't come home. Renamed OSIRIS-APEX, it kept going, off toward the asteroid Apophis.
Seven years, billions of kilometres, one handful. Worth it. Bennu is far too dim to see tonight, but look up anyway — the sky is full of things we haven't fetched yet.
Here's the clever bit, Lyra: the arm was essentially a vacuum cleaner run backwards — a puff of nitrogen to kick the gravel up into the collector. It worked so enthusiastically that a flap jammed open and bits of Bennu were drifting off before they got the lid on. First engineering fault in history caused by success.
Lyra, the carbon is the whole point: Earth's rocks have been cooked, buried and rained on for four billion years, and that rewrites the chemistry. A carbon-rich asteroid keeps its clays and organic molecules more or less as the young Solar System left them — a sample that never had its notes erased.