Pluto’s Revenge: How a “Dwarf Planet” Won Back Hearts
For most of the twentieth century, Pluto occupied a familiar place in classrooms and popular culture: it was the small, distant ninth planet. Then, in August 2006,... Read more.
Stars Don’t Really Twinkle — Here’s Why Your Eyes Think They Do
Step outside on a clear night and the stars may seem to pulse, quiver, or flash with tiny hints of color. The effect looks as though each star is changing, but the... Read more.
The Edge of the Universe Might Be Closer Than You Think
Does the Universe Have an Edge? A Guide to Cosmic Horizons Cosmology explained clearly When people imagine the “edge of the universe,” they often picture a final... Read more.
The Sun Is Louder Than a Rock Concert (But You Can’t Hear It)
What Would the Sun Sound Like? The Science of Solar Oscillations From Earth, the Sun can seem almost motionless: a bright disk crossing the sky with no hint of commotion.... Read more.
Why the Taj Mahal Seems to Change Color Throughout the Day
Seen at dawn, the Taj Mahal may appear delicately rose-tinted. Under a high midday sun, it can look almost dazzlingly white. Near sunset, the same marble may take... Read more.
The Lost City Hidden Beneath Modern Mexico City
Tenochtitlan Beneath Mexico City: The Ancient Capital Under the Streets Archaeology beneath a living capital Walk through the center of Mexico City and you are also... Read more.
The Day Stonehenge Almost Got Moved Piece by Piece
Imagine arriving on Salisbury Plain and finding a polite notice where Stonehenge should be: “Monument temporarily relocated for improvement works.” The idea... Read more.
The Secret Tunnel Hidden Beneath the Sphinx
The Passage Beneath the Great Sphinx: Evidence, Myths, and Archaeology A photograph of the Great Sphinx can make the imagination race. Its colossal body rises directly... Read more.
Why Mount Rushmore Almost Had a Very Different Look
Mount Rushmore looks inevitable today, but the familiar row of four presidential faces is really the surviving fragment of a much larger, repeatedly revised plan.... Read more.
How the Colosseum Was Once Turned Into a Fortress
When the Colosseum Became a Medieval Fortress The Colosseum is so strongly associated with gladiators that its later history can feel almost impossible to picture.... Read more.