PIVoT. Earth for Educators. Google Earth Tours. About the Digital Universe. At the center of the 1 billion light-year grid is the Milky Way and our Sun.
Surrounding us are the multi-hued Tully galaxies and the blue sheets of the Sloan Digital Sky Survey that stretch out billions of light-years away. Since 1998, the American Museum of Natural History and the Hayden Planetarium have engaged in the three-dimensional mapping of the Universe. BioDigital Human: Explore the Body in 3D! Molecular Rover.