Learn how the force of gravity influences the shapes of planets. Visit a gravity trap and learn about the ultimate gravity trap, a black hole.
So one might look at the earth in an interesting way other then in a gravitational one.
Lithospheric Magnetic Anomalies. A modeled image of Earth's magnetic field variations created as a result of science satellites like Magsat. nT = nanoteslas. The color bar indicates areas with positive and negative magnetic fields.
See: Space Geodesy Project