Vocabulary Unit 7 Lessons 6-10

a scientist who studies stars, planets, and outer space

• cluster

• gravity

• constellation

• astronomer

curved in shape; gradually winding around a center point

• cluster

• spiral

• constellation

• astronomer

uneven; not regular in shape, size, or other characteristics

• irregular

• spiral

• constellation

• astronomer

a number of things of the same kind that are together in a group

• irregular

• spiral

• constellation

• cluster

to find one’s way

• navigate

• spiral

• constellation

• cluster

a spoon or dipper with a long handle and a cup-like end used for serving liquids

• navigate

• spiral

• constellation

• ladle

able to be used again

• navigate

• reusable

• constellation

• ladle

the force or pull created by the mass of objects in the universe toward each other

• cluster

• gravity

• constellation

• astronomer

carrying and operated by people

• cluster

• manned

• constellation

• astronomer

to send a rocket into outer space

• cluster

• spiral

• launch

• astronomer