지구 근접 궤도를 도는 소행성이나 혜성 같은 태양계 천체.
An abbreviation for 'Near-Earth Object,' referring to any small solar system body (like an asteroid or comet) whose orbit brings it into proximity with Earth.
예문:
"NASA tracks thousands of NEOs to assess potential impact risks to Earth."
"The detection of a new NEO requires immediate calculation of its orbital parameters."
"While most NEOs are harmless, planetary defense strategies focus on mitigating the threat posed by larger ones."