smear

germ

return

peer

stir

squirm

nerve

early

worth

pier

thirst

burnt

rear

term

steer

pearl

squirt

perch

hurl

worse

learn

curve

world

firm

year

 

Challenge

 

interpret

yearn 

emergency

dreary

career

 

Vocabulary

 

astronaut - a person trained to participate in the flight of a spacecraft

launches - puts into action by force

mission - an operation that is assigned to achieve certain goals

orbit - the path of a spacecraft around the earth

reusable - able to be used again

satellite - a device made to orbit the earth while performing a task

space shuttle - a spacecraft launched like a rocket that can return to earth and land like a plane

specialist - one who becomes an expert in a particular field

weightlessness - the condition of being without weight