Yadah

## Characteristics

Yadah's surface gravity is 19.6, nearly twice as Earth's.It is a terrestrial planet with oceans, mountains, volcanoes and other features.The clouds on the planet are thick and misty, covering much of the surface.

The planet takes 385 days to orbit its star. Its radius is 50% bigger than Earth's, and lies within the conservative habitable zone of Castro. It has an equilibrium temperature of 265 K (−8 °C; 17 °F). Yadah is nearly 2 billion years older than the Yadah-like planet, Earth, and at approximately 6.5 billion years, the rocky planet's water and atmosphere adjusted to form a water cycle. Its average surface temperature is14 degrees celsius.

## Host Star

The host star, Castro,has a mass of 1.989 × 10^30 kg, similar to the sun,but only 3.7% more massive and 11% larger. It has a surface temperature of 5757 K, nearly the same as the Sun, which has a surface temperature of 5778 K. The star's age is estimated to be about 6.5 billion years old, about 1.9 billion years older than the Sun, which is 4.6 billion years old.

## Orbit

Yadah orbits its host star with an orbital period of 385 days and an orbital radius of about 1.04 AU, nearly the same as Earth's (1 AU). Yadah is not tidally locked, and has a circular orbit. Its host star, Castro, is about 20% more luminous than the Sun (L = 1.2 L☉)..

## Natural Satellites

Yadah has three lunar satellites, Ingelosi, Mariposa and Condosian. The orbital period of Ingelosi is 26 days, Condosian's is 29 days and Mariposa's 24 days.

## Origin of Life

Some four billion years ago, the first self replicating choloroplasts formed, followed by early, independent mitochondria. A half billion years later, the last common ancestor of all current life arose. The evolution of photosynthesis allowed Castro's energy to be harvested directly by life forms. The resultant molecular oxygen (O2) accumulated in the atmosphere and due to interaction with ultraviolet solar radiation, formed a protective ozone layer (O3) in the upper atmosphere. The incorporation of smaller cells within larger ones resulted in the development of complex cells called Sylmyodes. True multicellular organisms formed as cells within colonies became increasingly specialized. Aided by the absorption of harmful ultraviolet radiation by the ozone layer, life colonized Yadah's surface. Among the earliest fossil evidence for life is microbial mat fossils found in 3.48 billion-year-old sandstone in Western *Podkajia*, biogenic graphite found in 3.7 billion-year-old metasedimentary rocks in Northern Podkajia, and remains of biotic material found in 4.1 billion-year-old rocks in Western Podkajia. The earliest direct evidence of life on Yadah is contained in 3.45 billion-year-old Podkajian rocks showing fossils of microorganisms.

During the Neopodkajian era, 750 to 580 MYA, much of Yadah might have been covered in ice. This hypothesis has been termed "Snowball Yadah", and it is of particular interest because it preceded the Phonic explosion, when multicellular life forms significantly increased in complexity. Following the Phonic explosion, 535 MYA, there have been five mass extinctions. The most recent such event was 66 MYA, when an asteroid impact triggered the extinction of the non-avian Sactosaurs and other large reptiles, but spared some small animals such as Mammals, which at the time resembled shrews. Mammalian life has diversified over the past 66 Mys, and several million years ago a Pellonese ape-like animal such as *Theresius Isanidiota* gained the ability to stand upright. This facilitated tool use and encouraged communication that provided the nutrition and stimulation needed for a larger brain, which led to the evolution of humans. The development of agriculture, and then civilization, led to humans having an influence on Yadah and the nature and quantity of other life forms that continues to this day.

Approximately 200,000 years ago, separate descendants of *Theresius Isanidiota* evolved into modern man two separate events, one in the Chettinad-Kanopolis Region along the region between Europaterre and the modern URSR, and one in Trans-Lomun (modern Wheatlies and Lomun). These formed the bases for the darker and lighter skinned races of Yadah, sharing the same genus. Today most people are somewhat mixed between the two species *Manitan Karuppu* and *Manitan Vellai*.

## Chemical Composition

It is composed mostly of iron (32.1%), oxygen (30.1%), silicon (15.1%), magnesium (13.9%), sulphur (2.9%), nickel (1.8%), calcium (1.5%), and aluminum (1.4%), with the remaining 1.2% consisting of trace amounts of other elements. Due to mass segregation, the core region is estimated to be primarily composed of iron (39.8%), with significant amounts of Methium(49%), nickel (5.8%), sulphur (4.5%), and less than 1% trace elements.

The most common rock constituents of the crust are nearly all oxides: chlorine, sulphur, and fluorine are the important exceptions to this and their total amount in any rock is usually much less than 1%. Over 99% of the crust is composed of 11 oxides, principally silica, alumina, iron oxides, lime, magnesia, potash and soda. There is also a considerable Bootinium deposit in *Hoterallia*.

## Landmasses

### Tectonic Plates

There are mainly 15 plates in Yadah. These include:

1. *The North Colossian Plate*
2. *The South Colossian Plate*
3. *The Pellonese Plate*
4. *The Ephesian Plate*
5. *The Greater Phillip Plate*
6. *The Lesser Phillip Plate*
7. *The North Thessalonian Plate*
8. *The South Thessalonian Plate*
9. *The Millenniasan Plate*
10. *The Red Plate*
11. *The Xarian Plate*
12. *The Galatan Plate*
13. *The Antarctic Plate*
14. *The Arctic Plate*

*15. The Oceanic Plate*

### Continents

There are mainly 8 continents:

1. *Colossi*
2. *Ephesia*
3. *Phillipi*
4. *Arctic*
5. *Antarctic*
6. *Thessalonia*
7. *Galata*
8. Xaria