Read about the New Horizons spacecraft and its mission to gather more information about the distant dwarf planet, Pluto.
Take an incredible look at the planet Mars and its place in our solar system. Find out how it compares to Earth and learn more about its future exploration.
There are billions of stars in our galaxy, the Milky Way, and billions more throughout the universe. Find out what stars are made up of, what makes a constellation, and how travelers have used stars for centuries to find their way.
Take a tour of the galaxies and the universe. Learn about our Sun, the eight true planets, and the dwarf planets in our solar system. Find out what lies beyond the eighth planet, Neptune.
True planets, dwarf planets, and exoplanets--what's the difference? Learn the three rules scientists use to decide what makes something a planet. Discover how the search continues outside our solar system to find a planet like Earth.
Find out what planet Earth is made up of, where it is in our solar system, and what makes it the perfect planet for us to live on.
Read about the Sun and Moon and how they change positions in the sky throughout the day. Find out what else can be seen in the sky.