Astronauts tell what they like about their jobs.
Compare the sizes of the planets to the sun if it were the size of a basketball.
How long does it take to travel to the nearest star?
This video looks at NASA's strong tradition of exploration and the great journeys that lie ahead.
Learn fascinating facts (and some fiction) about the moon.
Chris Justice says some fires are necessary.
See pictures of cool things to do in microgravity.
See the winners of a worldwide contest that NASA helped sponsor.
Fix the currents so the flow will go where you want. Collect the keys and open the treasure chest!
Pelt Jupiter with comets!