When was Pluto discovered?

Pluto was the _______ planet from the sun.

How many moons does Pluto have?

Pluto is mostly made of ice.

What is the meaning of Pluto?

How long does it take for Pluto to rotate on its axis?

It takes Pluto ______ years to orbit the sun, once.

What alien would survive on Pluto?

Is the atmosphere thick or thin?