String theory is considered the leading “theory of everything,” but there’s still no empirical evidence for it.
What Is String Theory?
Theory - ダウンジャケット
Theory - サングラス
Physicist puts string theory on prime-time TV
String Theory - Definition, Theory of Everything, Types, Branes, Limitations, FAQs
String Theory - Definition, Theory of Everything, Types, Branes, Limitations, FAQs
String Theory Simplified - HubPages
Brian Greene: A Physicist Explains 'The Hidden Reality' Of Parallel Universes : NPR
theory
String Theory and the End of Space and Time with Robbert Dijkgraaf
Loop quantum gravity: Does space-time come in tiny chunks?