-
ARTILLERY CANNON - A large-caliber gun specifically used for land warfare.
-
ASTRONAUT - A person who not only studies outer space, but it also trained to travel in it.
-
YOUNG DRAGONFLY - A long-bodied insect with two pairs of fast-flapping wings.
-
MARS VOYAGER - A special spacecraft designed to travel to the fourth planet of our solar system.
ROCKET - An aerodynamic projectile which is propelled to incredible heights and great distances.