The Sikh langar (community kitchen) serves free meals to anyone regardless of religion or social status.

The marathon distance of 26.2 miles was standardized at the 1908 London Olympics to finish in front of the royal box.

Beethoven continued to compose music after going almost completely deaf, including his Ninth Symphony.

Particles can exist in multiple states until observed.

Celtic mythology featured a world beyond death called the Otherworld — not a punishment but a paradise.

Project Blue Book officially ended in 1969.

Atoms are 99.9999999999999% empty space — if an atom were scaled to the size of a football stadium, its nucleus would be a marble at the center.

The Large Hadron Collider is the world's largest particle accelerator.

An NBA basketball court is exactly 94 feet long and 50 feet wide.