A hypersonics weapon startup is lining up a massive new funding round to scale its business with the U.S Department of ...

Interestingly, the amount of money the Army has promised to the Castelion Corporation is far less than what the other ...

Silicon Valley’s enthusiasm for superfast weapons has picked up speed, with defense-tech startup Castelion raising $100 million through debt and equity to build hypersonic missile systems.

The Pima County Fairgrounds are best known for barrel racing, spinning carnival rides and International Hot Rod Association ...

Arizona officials, including Sen. Mark Kelly, urge hypersonic missile startup Castelion to consider Tucson for expansion, highlighting Arizona's aerospace and defense ecosystem.