| 释义 |
radio meteor radio meteor (radar meteor) See meteor.radio meteor[′rād·ē·ō ′mēd·ē·ər] (astronomy) A meteor which has been detected by the reflection of a radio signal from the meteor trail of relatively high ion density (ion column); such an ion column is left behind a meteoroid when it reaches the region of the upper atmosphere between about 50 and 75 miles (80 and 120 kilometers), although occasionally radio meteors are detected at higher altitudes. |