In the Critique of Pure Reason, which is regarded as one of the most difficult books ever written, the philosopher Immanuel Kant (1724-1804) argues that space and time are not features of the world-in ...
A photon can cross a billion light-years while accumulating no elapsed time along its path. ・Special relativity links space ...
A team from Vienna and Frankfurt has found a formula describing a strange phenomenon: Space and time can form a kind of "crystal" that may turn into a black hole. The results are described in Physical ...
Subatomic particles, gravity wells and the beginning of the universe – these are difficult and mysterious concepts that are better understood with storytelling and metaphor. That's exactly theoretical ...