Fiery Space Rock That Might Land on Earth

Word Meaning:

METEOR — (now meteorology) An atmospheric or meteorological phenomenon. These were sometimes classified as aerial or airy meteors (winds), aqueous or watery meteors (hydrometeors: clouds, rain, snow, hail, dew, frost), luminous meteors (rainbows and aurora), and igneous or fiery meteors (lightning and shooting stars).

Definitions from Wiktionary.