STEM Challenges

One hundred years after Einstein predicted them, gravitational waves were finally detected — ripples in the fabric of spacetime from colliding black h...

Einstein's greatest masterpiece took him ten years to complete. General Relativity reveals that gravity is not a force at all — it is the curvature of...

In 1905 a 26-year-old patent clerk named Albert Einstein turned physics upside down. Discover why the speed of light is the ultimate speed limit, why ...

An orbit is one of the most elegant ideas in physics — an object in perpetual free fall that keeps missing its target. Explore how spacecraft engineer...

The light from stars is like a coded message — it tells us what stars are made of, how hot they are, how fast they are moving, and whether they have p...

Before Newton understood why planets orbit the way they do, Johannes Kepler discovered how — purely from decades of painstaking data. Explore the thre...