# The $13 billion startup racing to close America’s hypersonic gap

- Source: Fortune | FORTUNE
- Published: 2026-10-31T11:00:00+00:00
- Category: Business
- Original: https://fortune.com/2026/10/31/hypersonic-castelion-defense-tech-startup/
- Canonical: https://groundlevelnews.com/story/the-13-billion-startup-racing-to-close-america-s-hypersonic-gap-b50def/

Castelion is racing to give the U.S. the affordable hypersonic missile it doesn’t yet have.

_Ground Level News shows a short summary only; the full article and all rights belong to Fortune | FORTUNE._