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Planet: Platten the Flat World
Mass: Unknown
Gravity: 1.3
Atmosphere: normal
Day 30.5 hrs
Year -/ 423 days

The flat world is a stellar aberration. A perfect one sided disk floating stationary relative to it's sun. One side of Platten appears as any other world with mountains, plains and oceans except there is no curvature to the surface. The sky is an equally perfect dome. The back side is featureless and black, as if there is nothing there. This blackness extends to the edges of the world. When viewed from the side only the sky and surface is visible. The world is slightly over 10,000 miles in diameter although archaeological evidence shows it is 8000 units used by the ancient inhabitants.

Climate: The center of Platten is an arctic zone with temperatures slowly rising as you approach the edge. Daytime temps at the edge can reach 120 degrees in the lowlands and 280 deg in the mountains. As a result the edge zone ranges from blistering desert to boiling rain forest. Despite the edge of the sky being much closer at the atmospheric pressure is only slightly greater than standard and does not change wit altitude. Instead it abruptly transitions from air to space.

Days and Years: Despite Platten not orbiting the sun it does have a day/ night cycle and seasons on a 333 day cycle (423 standard days). Day cycles are 30.5 hours long. During the day the surface faces directly at the sun, at night directly away. Between the two is an 80 minute period during which the disk rotates on a an axis. Depending on season a day period lasts between 9 and 17 hours. The axis upon which Platten rotates also shifts with the season by approximately 30 degrees.

Navigation: Above the center of the world at the top of the sky appears a halo, dark in daytime, light at night, and visible from anywhere on the surface. There is also a magnetic South pole at the center. As you approach the edge a faint shimmering appears however things are still visible past the shimmer. This is due to an effect where crossing the edge instantly transports you to a point diametrically opposite where you crossed. This even occurs in the sky or underground. Transit across the boundary preserves speed and direction with three exceptions. First is that edge ward changes to center. Second is that upward motion that would take you out of the sky but below escape velocity causes you to slide along the boundary. The final exception is escape velocity. If traveling greater than 1300 ft/ sec you will leave the sky but still be moved to the opposite point. Plattens lack of rotation about it's sun means that several stars, visible during daytime, remain in fixed position providing secondary references for navigation.

Subterranean and the back side: Despite there being no external sign of Platten having a thickness it is still possible to go below ground. Researchers have drilled over 10 miles deep and discovered evidence of normal geological processes. They have also proven that the boundary extends in a hemispherical shape below the surface with the same radial translation as above the surface. In contrast there is no evidence of the subterranean areas from the back side. It is possible to fly into where mountains cross the edge or to travel almost to where the surface should be. If you do touch the back side of the surface you are instantly transported to the edge of the sky pointed at the surface and at a point diametrically opposite.