Here’s how it works. General relativity is physicist Albert Einstein's understanding of how gravity affects the fabric of space-time. The theory, which Einstein published in 1915, expanded the ...

According to Einstein, time is not fixed - it changes depending on speed and gravity. On Mercury, closer proximity to the Sun slows time ever so slightly. This episode explores gravitational time ...

This dimple in space-time is the result of what we call a gravity well, and it was first described over 100 years ago by ...

Albert Einstein's theory of general relativity—which explains gravity as the product of the distortion of space and time—may not be universally applicable. This is the conclusion of physicists ...

Sponsor Message During Einstein’s time in Prague, a time in which he works out his theory of relativity, Kafka will have his own breakthrough. In one long feverish night he will pen the short ...

In many ways, Einstein’s “miracle year” inaugurated the modern era, with its jumpy, discordant points of view and shocks to established truths. But the time, generally, was one of great ...

NPR's Scott Simon speaks with author and cartoonist Ken Krimstein about his new graphic novel, "Einstein in Kafkaland." It visualizes the time Albert Einstein and Franz Kafka lived in Prague and met.