Ning Li was a Chinese-American physicist who worked at the University of Alabama in Huntsville’s Center for Space Plasma and Aeronomic Research. With physicist Douglas Torr, she published theoretical papers in the 1990s proposing that aligned ions in a rotating superconductor could generate unusually strong gravitomagnetic effects.

Li’s academic work grew from condensed-matter and gravitational theory into a proposal with obvious aerospace implications. Founding AC Gravity was an effort to move from equations and laboratory concepts toward a device-oriented research program. When public updates stopped, the absence was filled by stories of secret breakthroughs. Later family accounts described a serious accident and prolonged health consequences, restoring an ordinary human chronology to years that internet narratives had treated almost entirely as evidence of suppression.

Li left the university and founded AC Gravity LLC to pursue applied research. The company received a U.S. Department of Defense small-business award for work on gravitational effects, but public results did not establish a reproducible anti-gravity device. After Li withdrew from publication, rumors claimed she had disappeared into classified work or returned to China. Family reporting after her 2021 death provided a more ordinary and tragic account involving a serious 2014 traffic injury and later illness.

Li is central to anti-gravity research and the folklore of suppressed exotic propulsion. Her peer-reviewed theoretical work and government grant are documented; the leap from those facts to a successful secret craft is not. Her biography is especially valuable because it restores a scientist’s real career and later health history to a story often retold only as mysterious disappearance.