Firefly is one of several companies racing to field new medium-class rockets, and all will be at least partially reusable. Rocket Lab, perhaps the most dominant company in Firefly's class, is developing the Neutron rocket as it continues flying the smaller Electron launcher, which now has amassed 50 missions. Relativity Space, a well-funded private company based in California, is developing the partially reusable Terran R rocket after abandoning its smaller Terran 1 vehicle following just a single test flight. Stoke Space is working on a novel rocket design with a reusable booster and upper stage.

I can't wait for all these new reusable vehicles. The future is exciting! I'm pretty confident in Rocket Lab, and reasonably confident in BO. Firefly and Relativity are a bit of a mixed bag. Stoke is the dark horse, and I hope they succeed. Their design is super cool.