Author Archives: By Katie McKissick, National Aeronautics and Space Administration

It’s over three billion miles away from Earth. We’ve only known about it since 1930. Pluto is an icy rock about a fifth the size of Earth. We called it […]

Europa is one of Jupiter’s moons. It’s about the size of our moon. Europa is a very special moon in our solar system because it might be able to support […]

The sun is a giant ball of burning gas 93 million miles away. It burns so brightly it warms us here on Earth and gives us energy. Because it’s so […]