STEM Challenges
Explore fun and educational challenges across math, science, engineering, and coding!
Showing 6 of 121 challenges (filtered)
Inside the Sun
Space ExplorerThe Sun is not just a ball of fire — it has a complex layered structure, from a core hotter than anything on Earth to an outer atmosphere millions of ...
The Cosmic Distance Ladder
Space ExplorerHow do astronomers measure the distance to a galaxy billions of light-years away? No single method works at all scales. Discover the clever series of ...
The Scale of the Solar System
Space ExplorerThe solar system is almost entirely empty space. Distances between planets are so enormous that even our fastest spacecraft take years to reach them. ...
Units of Distance in Space
Space ExplorerThe solar system, nearby stars, and distant galaxies require completely different measuring sticks. Discover the astronomical unit, the light-year, an...
The Speed of Light and Looking Back in Time
Space ExplorerEvery time you look at the night sky, you are looking into the past. Light takes time to travel across space, and the most distant galaxies we can see...
The Electromagnetic Spectrum
Space ExplorerVisible light is only a tiny slice of all the radiation in the universe. Explore the full electromagnetic spectrum and discover how telescopes that se...