If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.
If you're behind a web filter, please make sure that the domains
*.kastatic.org and *.kasandbox.org are unblocked.
NASA's vision is to reach for new heights and reveal the unknown so that what we do and learn will benefit all humankind.
This section contains a series of tutorials on astronomy and space exploration developed in collaboration with NASA
Exploring the Universe
Centuries of observations ignited curiosity about other bodies in our solar system. Eventually, we reached out and touched them...what did we find?
Where is Mars? How does it move? How far away is it? What are the conditions on the surface? This tutorial covers our initial observations of the Red Planet
What are the conditions on the surface of Mars? Does it have life? Does it have water? Was the ancient environment habitable on Mars? This tutorial covers 20th century discoveries.
Why are we going to Mars today, where are we looking, what are we hoping to find?
What did the curiosity rover find? Follow the mission timeline & findings here.