Tagania

General InformationTagania is the 4th planet in it's system. It is a world filled with a great variety of enviroments and life. The planet is 7.5 billion years old - making it 3 billion years older than Earth. It is also a super Earth with a mass 3 times as much. It is similarly close to it's star as Mercury is to our sun. This planet is also unbreathable to Humans as it is mostly Carbon Dioxide. It's gravity is also a bit stronger than our's.
History & Future
7.5BYA: The planet is formed in the early days of it's system. It becomes a bit larger than our Earth. It is a molten scorching place - but it starts to cool down.
7.3BYA - 2.6BYA: Four asteriods will be captured and they become the planet's dwarf moons.
7.2BYA: The lava on the surface starts to cool down and turn into rock. Eventually volcanoes appear everywhere and start erupting. Around this time there is heavy bombardment from asteriods slowly bringing in water over time.
6.8BYA: First life - microscopic organisms deep within the oceans.
6.4BYA: Some of these unicelluar organisms begin to use photosynthesis.
5.9BYA: First simple life on land.
5.4BYA: First Ice Age period - lasts for a hundred million years and almost freezes much of the planet.
4.3BYA: Volcanic activity heavily increases with the eruption of supervolcanoes and causing the first mass extinction event.
3.6BYA: First multicelluar organisms - though it will take hundreds of millions of years before they even become visible to the human naked eye.
2.7BYA: First complex life.
2.4BYA: In the ocean there is an event similar to Earth's Cambrian explosion - however complex life on land will not arrive yet, there are very few islands and there are no plants on land.
2.1BYA: Second mass extinction event - gamma ray burst 15,000 light years away wipes out 80% of all life. A full recovery will take a few million years but life carries on. In that time there aren't a large number of species living in each ecosystem like they used but it will start becoming more variable over time as it repopulates quickly.
1.9BYA: Plants start growing near the coast, meanwhile some creatures in the ocean, which has long fully recovered, leave behind and become the first animals on land.
1.8BYA - Present: There is an explosion of life on land becoming as varied as the ocean. In almost two billion years, the enviroments and organisms will change so much in so many different ways. The planet will have several warm and cold periods along with some mass extinctions once in a while.
1.3BYA: A large asteriod even larger than the one that wiped out the non-avian Dinosaurs collides with the planet and wipes out 92% of life.
985MYA: An Ice Age causes the planet to become frozen with the average temperature dropping to -30C. This causes another mass extinction - the poles are completley unhabitable at this point. Liquid water and plants only exist in the equator with life clinging on to a cold and hostile world. This Ice Age will last for 50 million years.
850MYA - 400MYA: The planet enters an unusually long warm period where much of the planet is covered in desert with small hints of shrubland, savannahs, grasslands. Tropical forests are rare but even rarer are temperatre and colder biomes which exist only in the poles.
300MYA: Another gamma ray burst - this time even closer at 6000 light years - causes a mass extinction that wipes out 99.9% of life; The extinction changes the planet forever and it will take a hundred million years for a full recovery.
Present: The Planet is currently in a minor Ice Age which is far less severe than the one that happened almost a billion years ago. A new species known as the Clavortis looks like a cross between a bird and ape is starting to become bipedal and more sapient. This may be the start of intelligent life on this planet.
Future (In a scenario without the interference of the decendants of the Clavortis)
1MYF: End of the present Ice Age
50MYF: Tagania's rings will disappear.
1BYF: The sea levels will have fallen by a lot and there is now only one super continent.
2BYF: Tagania is completely unrecognisable. Most of the surface is now vast barren desert due to a slow greenhouse effect which is warming up the planet. The average temperature is now 35C.
2.5BYF: The extinction of all complex life due to the increasing greenhouse effect. The oceans will also evaporate around this time. The last lifeforms live near the poles with many of them only being active at night.
5BYF: The extinction of all life on the planet. It is ever increasingly hot world with high volcanic acitivty.
10BYF: Tagania's neighbouring gas giant uses its gravity to pull it further outwards - this may have prevented it from getting engulfed by the upcoming red giant star.
20BYF: 3 of Tagania's moons leave while another collides with it.
50BYF: Tagania's star becomes a red giant. Tagania survives the red giant phase while losing its atmosphere in the process. Volcanic activity will also stop around them.
51BYF: Tagania's star sheds it outer layers making a planterary nebula and becoming a white dwarf.
1TYT: The white dwarf star slowly cools down as it get darker.
1 QD: Tagania is completley dark as its star has become a black dwarf.
1 QT: Every planet beyond Tagania has left the system due to instelluar encounters. Tagania and its two remaining neighbours collide with the dead star in an ever darker and colder universe.
Surface & Continents
Climate & Biosphere
It orbits it's orange dwarf star in just 74 Earth days but the days are extremely long. The temperature changes drastically and quickly yearly. In the peak summer the average surface temperature is 20C whilst in the winter it can be as low as 0C. with the extremely long days it can mean there can be a hot day ending with a cold night or a cold day ending a hot night. This heavily affects the behaviour of the planet's animals as well as plants making them more or less active. Many plants are born at dawn and end up dying at night as the days are so long. It's gravity is also almost twice as strong meaning it's creatures are much more bulkier and muscular than our's. The planet's surface is mostly covered in temperate forests, taigas, and tundras. The planet's stronger gravity has an effect on the organisms living here. Many animals have a lot of muscle and lie close to the ground as falling is more serious than on Earth.
Taganian Species
 
Images
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