When it comes to topics about the universe, often "String theoryI hear the word "what is that substance" is not well known. A movie that explains such 'string theory' is published on YouTube. Because ...

Stop. Look around. All things, visible or not, are made of particles so tiny that many find their sizes difficult to comprehend. Far removed from our everyday experiences, they move at rapid speeds ...

What is the stuff in the universe made of? Our high-school physics tells us atoms, with 90 natural elements building the world around us. But what are these atoms made of? Over the last century, we've ...