Our Solar System Matching 

Match the terms with their definitions. 

Name ____________________________

Date _____________________________

The brightest star in the night sky.   

The largest known star in the universe. 

The third planet from the sun.

A celestial body that is red in color with the brightness sometimes equal to an entire galaxy.  

A cloud formation of dust and gas seen as light against a darkened area.   

The beginning of the death of a star.  

An explosion of a star in the latter stages of its development.   

Earth's natural satellite.

A rotating star that consists of neutrons and releases electromagnetic radiation.   

A very large formation of stars, gas, and dust grouped together in the universe.   

The star at the center of our solar system.

The study of the size, movements, and composition of stars, planets, comets, and other deep-space objects in the universe.   

The theory that suggests that the universe will continue to expand indefinitely.   

The theory that suggests that the universe will stop expanding and become smaller.  

a. supernova

b. red giant stage 

c. quasar 

d. Sun

e. open universe 

f. pulsar

g. Sirius

h. galaxy

i. closed universe 

j. UY Scuti

k. Moon

l. nebula

m. Earth

n. astronomy

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