VisualEditor:Test

Poetry
This poem by John Donne mentions the world:

Her death hath taught us dearly that thou art Corrupt and mortal in thy purest part. Let no man say, the world itself being dead, 'Tis labour lost to have discovered The world's infirmities, since there is none Alive to study this dissection; For there's a kind of world remaining still, Though she which did inanimate and fill The world, be gone... The entire poem can be read at Wikisource.

Shape of this world
This world is not a perfect sphere. It is slightly flattened. This is the mathematical formula for measuring the flatness of a sphere:

$$\begin{align} f&=\frac{a-b}{a}. \end{align}$$

For this world, $f\,\!$ is approximately 0.3%. The Moon is rounder. For the Moon, $f\,\!$ is approximately 0.1%. Jupiter is flatter. For Jupiter, $f\,\!$ is approximately 6.5%.

Local planets
A world is on a planet. There are different types of planets. There are several types of planets in this solar system: These are the planets in this solar system:
 * Terrestrial planets
 * Giant planets
 * Gas giants
 * Ice giants
 * Four terrestrial planets
 * Mercury
 * Venus
 * Earth
 * One satellite, called the Moon
 * Mars
 * Two gas giants
 * Jupiter
 * Four large satellites
 * 63 other satellites
 * Saturn
 * 62 satellites. Some are very small. The largest, called Titan, is larger than the planet Mercury.
 * Seven are large.
 * Two ice giants
 * Uranus
 * Five satellites
 * 22 other satellites
 * Neptune
 * One satellite, called Triton