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10 Cards in this Set

  • Front
  • Back
astronomer

a person who studies the sun, planets, stars, and other objects in space
besides

in addition to or also

crater

a round hole in the shape of a bowl

degree


a unit for measuring how warm something is;




a stage or step in a series that one goes through


diameter

the distance from side to side and through the center of a circle or a round object

gaze

to look steadily at something for a long time

gravity


the force on our planet that pulls things toward the center of the earth;




the condition of being serious


reflect


to turn or throw something back;




to think carefully about something


telescope

an object that makes distant things seem closer and larger

universe

all of space and all of the objects in space