Universe

Space and all the matter and energy in it.

• Space
• Solar System 
• Universe
• Sun

The sun and all of the planets and other bodies that travel around it. 

• Universe 
• Galaxy 
• Star
• Solar System 

A relatively large spherical body that orbits a star.

• Star 
• Planet
• Moon 

A large celestial body that is composed of gas and that emits light.

• star
• black hole
• element 
• big bang

A collection of stars, dust, and gas bound together by gravity.

• Nebula
• Galaxy 
• Universe
• Protostar

 A large cloud of gas and dust in interstellar space; a region in Space where stars are born.

• Protostar 
• Nebula
• Galaxy 
• Star

The distance that light travels in one year; about 9.46 trillion kilometers.

• Light Year
• Light Kilometer 
• Light Second 
• Warp Speed

 The actual brightness of an object such as a star

• Luminosity 
• Apparent Magnitude 
• Brightness 
• Light Year

A small, hot, dim star that is the leftover center of an old sunlike star

• Red Dwarf
• White Dwarf 
• Main Sequence 
• Giant

A gigantic explosion in which a massive star collapses and throws its outer layers into space.

• Black Hole 
• Supernova
• Neutron Star 
• Nebula