On Other Celestial Bodies
Similar coordinate systems are defined for other celestial bodies such as:
- A similarly well-defined system based on the reference ellipsoid for Mars.
- Selenographic coordinates for the Moon
Read more about this topic: Geographic Coordinate System
Famous quotes containing the words celestial and/or bodies:
“When the spirit brings light into our minds, it dispels darkness. We see it, as we do that of the sun at noon, and need not the twilight of reason to show it us. This light from heaven is strong, clear, and pure carries its own demonstration with it; and we may as naturally take a glow-worm to assist us to discover the sun, as to examine the celestial ray by our dim candle, reason.”
—John Locke (1632–1704)
“We thought it would be worth the while to read the epitaphs where so many were lost at sea; however, as not only their lives, but commonly their bodies also, were lost or not identified, there were fewer epitaphs of this sort than we expected, though there were not a few. Their graveyard is the ocean.”
—Henry David Thoreau (1817–1862)