Why do moving rulers shrink (length contraction) and moving clocks run slow (time dilation) such that everyone measures the same speed of light c, regardless of their relative motions? Einstein ...

You’ve probably never heard of a galaxy known as NGC 6264, and you’ve surely never given it a whole lot of thought. But the distant star cluster has just provided astronomers with new insight into one ...

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.