NASA has disqualified one of the two proposals for a large astrophysics mission, a decision the project’s leader blames on ...

NASA is canceling the AXIS X-ray space telescope mission concept, saying it failed to meet key requirements. But the project leader thinks there's another reason.

NASA's X-59 successfully reduced sonic booms from thunder-level 105 decibels to whisper-quiet 75 decibels, potentially ending the 50-year supersonic flight ban.

As the first major piloted NASA X-plane to fly in a generation and the first crewed, purpose-built U.S. high-speed research aircraft since the X-15 of the 1960s, the X-59 low-boom ...

NASA's upcoming astrophysics mission, AXIS, was abruptly cancelled due to alleged mismanagement and budget confusion at the ...

NASA has revealed more detail about the recent first flight of its X-59 Quesst supersonic demonstrator jet, a milestone the agency describes as demonstrating its continued ability to manage ...

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