low gravity; subgravity
Refers to gravitational conditions weaker than Earth's surface gravity, such as on the Moon or in orbit.
Because the lunar surface has low gravity, you can jump high.
Experiments in a low-gravity environment are conducted on the space station.
重力 is the general term for 'gravity'; 低重力 specifies a reduced level.
Compound of 低 (てい, 'low') and 重力 (じゅうりょく, 'gravity').