STEM Challenges
Explore fun and educational challenges across math, science, engineering, and coding!
Showing 6 of 121 challenges (filtered)
Seyfert Galaxies and Blazars
Space ExplorerNot all active galaxies are as dramatic as quasars. From the common, nearby Seyfert galaxies with their unusually bright nuclei, to the extreme blazar...
Radio Galaxies and Jets
Space ExplorerSome galaxies blast out streams of plasma at nearly the speed of light, inflating enormous bubbles millions of light-years across. Explore the dramati...
Quasars
Space ExplorerQuasars are the most luminous sustained objects in the universe — so bright they outshine entire galaxies, yet powered by something far smaller than a...
Active Galactic Nuclei
Space ExplorerMost galaxies have a sleeping giant at their core — a supermassive black hole. But when one wakes up and begins feeding, it becomes an Active Galactic...
Measuring Galaxy Distances
Space ExplorerHow do astronomers know how far away a galaxy billions of light-years away really is? Discover the cosmic distance ladder — the brilliant chain of tec...
Dwarf Galaxies and Satellite Systems
Space ExplorerThe Milky Way is not alone — it is surrounded by a whole family of smaller satellite galaxies. Meet our nearest galactic neighbors, including the Mage...