Space

Pluto became known as a _____________ in 2006

One day on planet Venus is longer than a whole year on Earth! This is because it takes longer for the planet to rotate in a full circle than it takes to ____________ around the sun.

Scientists believe that there may be a planet entirely made of diamonds 40 million ___________ away!

The _________ used to be part of the Earth! It broke off when a large object hit the Earth billions of years ago.

There is no sound in space because it has no ______.

However, astronauts can still communicate because radio ______ can travel through space.