“Figure 4.1: Both dark matter and dark energy are invisible, which means that they refuse to interact with light and other electromagnetic phenomena. We know of their existence only through their gravitational effects.” — Max Tegmark Copy Share Image
The longer I live, the more deeply am I convinced that that which makes the difference between one person and another-between the weak and the powerful, the great and the insignificant-is energy-invisible determination. — Charles Buxton Copy Share Image
