流りゅう星せい物ぶっ質しつ

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Meanings

1

noun

astronomy

Technical term in astronomy for a small rocky or metallic body in outer space, smaller than an asteroid.

流りゅう星せい
流星 (meteor) is the visible streak of light produced when a meteoroid enters the atmosphere, while 流星物質 is the physical object itself.
隕いん石せき
隕石 (meteorite) is a meteoroid that survives passage through the atmosphere and hits the ground.

Compound of 流星 (meteor) and 物質 (matter, substance).