Astronomers Confirm Einstein’s Theory of Relativity By Watching a Star Orbit a Black Hole
Astronomers watched as a star passed within 12 billion miles of the black hole at the center of the Milky Way and reached a speed of 15 million miles per hour.
Physicists Used Atomic Clocks to Test Einstein’s Theory of Relativity in a 14-Year Experiment
A foundational thought experiment in Einstein’s theory of general relativity just got its most precise confirmation ever by turning the entire Earth into a laboratory.
New Project Lets You Reenact Einstein and Freud’s Remarkable Correspondence
Typographer Harald Geisler's latest Kickstarter project will let you mail Einstein and Freud's pacifist letters to a friend...or your oppressors.