This Single Image Profoundly Sums Up Einstein’s Landmark Theory

A Hubble-imaged Einstein ring.
Image: ESA/Hubble & NASA/Judy Schmidt

You might think you have gravity pretty well figured out. If you drop a ball out of a window, a short time later it will hit the ground. The higher up you drop it, the faster it travels before it hits the ground.

But something far more profound is going on, and it’s nicely illustrated by the image you see above.

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