Choose a topic and level, then practice at your own pace.
A look at the daily life of astronauts living and working on the International Space Station.
The story of the Apollo Eleven mission and the first human footsteps on the Moon.
A description of how astronauts eat, sleep, work, and exercise aboard the International Space Station.
An account of how robotic rovers and a small helicopter are exploring the surface of Mars.
How telescopes changed the way people study the stars.
How robot rovers explore the surface of Mars and search for water.
An explanation of how a rocket lifts off and carries satellites into orbit.
A talk about the long and difficult training that future astronauts must complete.
A talk about how satellites help everyday life, from weather forecasts to navigation, and the problem of space junk.
The story of Galileo, his early telescope, and how his discoveries changed our view of the sky.
A boy spends a clear evening looking at the Moon and planets through his grandfather's telescope.
A school class visits the city planetarium and learns simple facts about the solar system.
A student follows the daily journey of a robot rover crossing the red deserts of Mars.