Castelion's Series A funding round raised $100 million, led by Lightspeed Venture Partners and including several other firms.

Reports are growing of a weapon that could threaten even the most advanced enemy aircraft, with hypersonic speeds posing ...

Silicon Valley’s enthusiasm for superfast weapons has picked up speed, with defense-tech startup Castelion raising $100 ...

ORLANDO, Fla. — A California-based startup led by former SpaceX executives announced Jan. 29 it has raised $100 million to ...

Boom Supersonic plans to break the sound barrier during a test flight this morning (Jan. 28). This would mark the first time ...

China has allegedly tested a new air-to-air hypersonic missile in its Mars Mission tunnel facility, Linuyang, Henan province.

DRDO develops hypersonic technology with scramjet engine, achieving milestone in next-generation hypersonic missions, praised ...

DRDL recently demonstrated a successful ground test of the Active Cooled Scramjet Combustor for 120 seconds for the first ...