For sixty years, every orbital rocket was thrown away after one use — like scrapping an airliner after each flight. On December 21, 2015, a Falcon 9 booster came back and landed. The economics of space have been bending ever since.
The most expensive litter in history
From Sputnik through the 2010s, the launch business ran on a staggering waste: a machine costing tens of millions of dollars flew once, for about nine minutes, and was dropped in the ocean. The Space Shuttle tried to fix this and half-succeeded — its orbiter and boosters were recovered, but refurbishment proved so complex that flights stayed rare and expensive. The lesson the industry drew for decades was that reuse wasn't worth it. The lesson turned out to be about the Shuttle, not about reuse.
Falling back with a plan
A returning booster is falling from the edge of space at many times the speed of sound, and it has to end its journey at exactly zero velocity, exactly at the ground, balanced on its engines like a pencil on a fingertip. SpaceX failed at this publicly, repeatedly, and instructively — boosters exploded on the drone ship in fireballs the company itself posted online — until the night of December 21, 2015, when a Falcon 9 first stage descended over Cape Canaveral, lit its engine, and settled onto its legs. Sixteen months later, that class of booster did something no orbital rocket ever had: it flew to space a second time.
From stunt to routine
The revolution isn't that landing is possible — it's that it became boring. Boosters now land several times a week, are turned around in weeks, and individual first stages have flown more than twenty missions. Watch any Falcon 9 webcast on the Live page and you'll notice the landing gets a bigger cheer than the launch, then the internet moves on. Routine reuse — plus packing more satellites per flight — collapsed the price of reaching orbit, and the modern boom in satellites, stations, and startups is largely downstream of that collapse.
The next bet
The bet now is whether the trick scales all the way. Starship — the largest rocket ever flown — is designed to reuse both stages, with boosters caught out of the air by the launch tower itself. If full and rapid reuse works, launch starts to be priced like freight rather than like a national event, and plans that sound like science fiction — Moon bases, Mars cargo runs — become spreadsheet problems instead. Whether it works is being decided in public, test flight by test flight, on this site's schedule.