image		m______ is a substance, for example plastic, leather, wood, stone, etc. that you can use to make things.
alien		s_____ is a small amount of something that you can use to find out what all of it is like.
scientist		m______ is a set of checks to find out how healthy you are.
insect		t_____ is knowledge, equipment, methods, etc. in machines, for example computers.
meteor		r______ is a method of finding the position of things using radio signals.
medical test		a______ is a creature from another world.
parachute		c______ is a bright object in the sky like a star with a tail.
technology		s_____ is a vehicle that can travel in space.
material		s_____ is someone who studies science.
spaceship		b______ is a plastic bag filled with air or a gas that weighs less the air.
comet		p______ is a piece of equipment like a wide piece of cloth over your head that you can use to come down to the ground after leaving a plane.
star		p______ is someone who controls a plane when it is flying.
sample		s_____ is a small, bright light you can see in the sky at night.
pilot		i______ is what you see in a picture, on television, etc.
balloon		i______ is a small animal with six legs, for example an ant.
radar		m______ is a piece of rock moving extremely fast in space that we see as a line of light in the sky.