Astronomical diagram of the seasons and signs of the zodiac, c. 1860

Earth Isn’t the Only Planet With Seasons

But they can look wildly different on other worlds.
Total solar eclipse, May 29, 1919, at Sobral, Brazil

Bridging The Gap of War: Einstein’s Eclipse

Astronomer Arthur S. Eddington argued that astronomy should be above politics, even when politics leads to world war.
Low angle view of Ferris wheel against clear blue sky

The Big Wheel

The Ferris wheel may not have been a new idea, but the revolving structure offered fun—from the fairgrounds to the classroom.
Fifteen puzzle

Square Space

Not so fast, Wordle. The Fifteen Puzzle, a challenge that inspired poetry, has obsessed fans for more than a century.
Source: https://commons.wikimedia.org/wiki/File:Ada_Lovelace_portrait.jpg

Ada Lovelace, Pioneer

Ada Lovelace wrote extensive notes on the world’s first computer. Her innovations foreshadowed those used in twentieth-century PCs.
NCAA free throw math

The Math Behind the Perfect Free Throw

The fate of a free throw is set the instant the ball leaves the player’s fingertips.