Jason Kim, the new CEO of rocket and spacecraft builder Firefly Aerospace, said he is "going to work maniacally" to scale the ...

Jason Kim, the new CEO of rocket and spacecraft builder Firefly Aerospace, said he is "going to work maniacally" to scale the company's efforts, which range from rocket launches to moon landings.

Firefly Aerospace conducted the first hot fire test of its new Miranda rocket engine, producing a massive plume of green flames. Firefly's Miranda engine is slated to be used on the first stage of ...