Stephen Hawking’s Last Paper Is Now Online
The black hole information paradox fascinated Hawking for decades, and is the topic of his final research study.
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.
humans of the year
One of the Greatest Cosmic Mysteries Was Solved By David Shoemaker’s Device
LIGO's detection of gravitational waves was an achievement comparable to Galileo’s telescope. Meet the man whose team built the detector.
Scientists Think the Speed of Light Has Slowed, and They're Trying to Prove It
A controversial theory that would overturn Einstein’s theory of general relativity could soon be tested.
Watch The Mechanics Behind Time Travel
The effects of time dilation on various spacecraft is visualized in Chomko & Rosier's 'Relative Clocks.'
Philosopher Jürgen Renn Explains Einstein's Theory of General Relativity
Where does revolutionary knowledge come from?
100 Years After Einstein's Relativity, We're Still Just Figuring Gravity Out
The most apparent of forces is still far and away the most mysterious of them.
Lost Satellites Will Help Test Einstein's Theory of General Relativity
Two of the ESA's Galileo positioning satellites wound up in the wrong orbit, but it's not all for naught.