Erytheia

Erytheia or RS 1236-1375-6-120543-26 4 - is the fourth planet from the star RS 1236-2505-7-1029746-249. The planet is a temperate marine terra.

## Surface Conditions

### Atmosphere

* 66.4% CO2
* 17.7% N2
* 8.24% O2
* 7.38% H2O
* 0.278% SO2

## Additional Information

### Moons

* 1 subterra
* 1 miniterra
* 1 microterra
* 5 asteroids

### Position in Star System

4th

ESI: 0.912

## History

* Erytheia formed 3.6 billion years ago. This age is quite small for a planet with multicellular life.
* ~3.2 billion years ago. The planet is cold. Then it was an oceanic terra with small islands
* ~3.2-2.9 billion years ago. The emergence of unicellular life in the oceans of the planet.
* ~1.4 billion years ago - 700 million years ago. Cooling Erytheia. At this time, the planet resembled one big snowball.
* ~700 million years ago. The warming of the planet, at the same time, multicellular life appears.
* ~440 million years ago. Formation of the first major continents
* ~59 million years ago. The first complex organisms came to land.
* Today - Erytheia is quite a young planet. Multicellular life, one might say, appeared relatively recently. The planet has several continents and islands. Except for forests and fields, the surface of the continents is mostly mountainous, swamps and permafrost are common. Over the course of millions of years, the temperature on the planet has changed dramatically, now there is a slight cooling. Erytheia has fairly high levels of carbon dioxide(CO2), a remnant of active volcanism during the formation of the planet. Emerged multicellular life produces a large amount of oxygen(O2), and the rate of its production is only increasing. It is possible that the same event will occur on Erytheia as on Earth - the Great Oxidation Event. Erytheia bears a strong resemblance to early Earth and is likely to follow a similar 'scenario' of Earth's history in the future.

## Biosphere

Multicellular life on the planet is very young. On Earth, the first multicellular organisms appeared 2.1 billion years ago, while on Erytheia 700 million years ago. Many terrestrial organisms have a fairly primitive structure, some of them resemble worms. Nevertheless, it is already visible how lizard-like animals begin to develop and reign among other organisms. Flora is green. There are almost no forests on the planet, for the most part there are only small patches of trees and tall stems. Marine flora and fauna are more developed than terrestrial ones. The fauna resembles early fish on Earth. Unusually, these fish have quite a huge number of teeth and fangs, which scares some researchers.

Erytheia(Rodrigos Mod)Erytheia(Vanilla)Erytheia in all its glory(Rodrigos Mod)View of Erytheia from the surface of the closest satellite(Rodrigos Mod)Erytheia from a different angle(Vanilla)Beautiful image of the close Erytheia and star RS 1236-1375-6-120543-26(Rodrigos Mod)Landscape of Erytheia(Rodrigos Mod)Highlands on Erytheia. Visible ice caps, forests and deserts in the same biome(Vanilla)Sunset on Erytheia(Rodrigos Mod)Night at Erytheia(Rodrigos Mod)Ice desert at Erytheia. It looks like a river used to flow here.(Vanilla)River flowing through icy deserts(Rodrigos Mod)Hills on Erytheia(Vanilla)Lake Jamuro located in a beautiful mountainous area(Vanilla)Landscape of Erytheia(Vanilla)Erytheia surface map(Vanilla)Erytheia surface map(Rodrigos Mod)
## Star system

All 5 planets revolve around a white main sequence star. In addition to Erytheia, there are three planets on which there may be life... More precisely, it may have been. The first three planets from the star have river beds, and most likely all three planets had water on their surface, and possibly life. Unfortunately, these planets suffered a fate similar to Venus. The temperature of these three planets is over 500 °C (932 F or 773 K) and they will never be habitable again. RS 1236-1375-6-120543-26 1 - resembles Mars if it were much closer to the Sun. RS 1236-1375-6-120543-26 2 is a desert planet with a beautiful purple/pink atmosphere. Probably, when there was water on the planet, it looked very beautiful. RS 1236-1375-6-120543-26 3 - an analogue of Venus, most likely with the same history. As a result, we can say that once in this star system there were 4 planets on which there was water.

RS 1236-1375-6-120543-26 1(Rodrigos Mod)RS 1236-1375-6-120543-26 2(Rodrigos Mod)RS 1236-1375-6-120543-26 3(Rodrigos Mod)RS 1236-1375-6-120543-26 planetary system(Rodrigos Mod)*Have you noticed the similarity between Earth and Erytheia? Both begin with an “E”.*

~Human comedian