Physicists have been attempting to explain time since Albert Einstein published his theory of relativity. Prior to Einstein, defining exactly what time really is wasn't necessary. But Einstein brought into play the idea of space-time, an idea that forced those who followed him to try to figure out exactly how people or objects occupy the same space at the same time. The … [Read more...]
Astronomic & Cosmographic Data
The Digital Orrery - follow this link to find out more Solar System Planet Equatorial Radius (km) Orbital Period in days Semi-major axis of orbit in AU Mercury 2439 87.97046 0.387099 Venus 6051 224.69815 0.723326 Earth 6378.14 365.25636053 1.000018 Mars 3393.4 686.9257 1.523638 … [Read more...]