NASA's "quiet" new supersonic jet, the X-59, just passed a key engine test, bringing it closer to its first flight later this year. ... On the ISS this week July 14-18, 2025.

NASA has developed special probes that will fly aboard F-15B jets trailing closely behind its X-59 "quiet" supersonic jet in order to measure the shock waves it produces.

Fifty years after passenger supersonic travel over land was banned over noise concerns, NASA believes those flights may return as soon as 2026 through the development of its X-59 jet.