WHAT'S THIS?
IT'S THE EARTH.
WHAT'S THIS?
IT'S A PLANET.
WHAT'S THIS?
IT'S THE SKY.
WHAT'S THIS?
IT'S THE SUN.
WHAT'S THIS?
IT'S AN ASTRONAUT.
WHAT'S THIS?
IT'S THE MOON.
WHAT'S THIS?
IT'S A ROCKET.
WHAT'S THIS?
IT'S A STAR.
