STEM Challenges

Astronomers use many different types of telescopes to study the universe across the full electromagnetic spectrum. Explore how refractors, reflectors,...

The naked eye can only show us a tiny fraction of the universe. Discover why telescopes revolutionized astronomy, what Galileo saw when he first point...

Now that you have explored each world individually, pull it all together. How do the eight planets stack up against each other in size, density, moons...

At the far edge of our solar system lie two strange blue-green worlds. Uranus rolls on its side, Neptune has the fiercest winds in the solar system, a...

Jupiter and Saturn are the giants of our solar system — planets so large that everything else seems tiny by comparison. Explore their storms, rings, m...

Mars is the most studied planet beyond Earth and our best candidate for future human exploration. From the largest volcano in the solar system to sign...