Energy Is The Ultimate Convertable Currency.

When General Relativity Was First Put Forward In 1915, The Math Was Very Unfamiliar To Most Physicists. Now We Teach General Relativity To Advanced High School Students.

Our Eyes Only See The Big Dimensions, But Beyond Those There Are Others That Escape Detection Because They Are So Small.

String Theory Envisions A Multiverse In Which Our Universe Is One Slice Of Bread In A Big Cosmic Loaf. The Other Slices Would Be Displaced From Ours In Some Extra Dimension Of Space.

Free Will Is The Sensation Of Making A Choice. The Sensation Is Real, But The Choice Seems Illusory. Laws Of Physics Determine The Future.

We Are Living Through A Remarkably Privileged Era When Certain Deep Truths About The Cosmos Are Still Within Reach Of The Human Spirit Of Exploration.