|Meteors that reach the Earth's surface are called ____.
|Stars arise in freezing clouds of dust and gas known as ____.
|Millions of ____ (huge rocks) orbit between Mars and Jupiter.
|Most ____ originate in the Kuiper belt or the Oort cloud.
|When asteroids smash together, ____ (small rocks) break off.
|Mizar and Alcor are double ____ in the Big Dipper asterism.
|The celestial sphere is divided into 88 ____.
|Meteoroids that enter the Earth's atmosphere are called ____.