Superhabitable planets

== Description ==
Superhabitable planet - is an hypothetical planet class of exoplanet or exomoon that may be better suited than Earth for the emergence and evolution of life.
== General characteristics ==
The concept was introduced in 2014 by René Heller and John Armstrong. they define a superhabitable world as a terrestrial planet or moon that could support more diverse flora and fauna than there are on Earth, as it would empirically show that its environment is more hospitable to life.
* Mass: approximately 2M🜨.
* Radius: to maintain a similar density to Earth, its radius should be close to 1.2 or 1.3R🜨.
* Oceans: percentage of surface area covered by oceans should be Earth-like but more distributed, without large continuous land masses. The oceans should be shallow; the light then will penetrate easier through the water and will reach the fauna and flora, stimulating an abundance of life down in the ocean.
* Distance: shorter distance from the center of the habitable zone of the system than Earth.
* Temperature: average surface temperature of about 25 °C (77 °F).
* Star and age: belonging to an intermediate K-type star(Orange Dwarf) with an older age than the Sun (4.5 billion years) but younger than 7 billion years.
* Atmosphere: somewhat denser than Earth's and with a higher concentration of oxygen. That will make life larger and more abundant.
Nevertheless, do not forget that the characteristics of the superhabitable world are controversial, and may have completely different criteria. Thus, even any habitable planet can be considered a superhabitable world. Therefore, there may be planets completely unsuitable for these characteristics
== Appearance ==
"The appearance of a superhabitable planet should be, in general, very similar to Earth. The main differences, in compliance with the profile seen previously, would be derived from its mass. Its denser atmosphere may prevent the formation of ice sheets as a result of lower thermal difference between different regions of the planet. A superhabitable world would also have a higher concentration of clouds, and abundant rainfall. In general, the climate of a superhabitable planet would be warm, moist, homogeneous and have stable land, allowing life to extend across the surface without presenting large population differences in contrast to Earth, which has inhospitable areas such as glaciers, deserts and some tropical regions. If the atmosphere contains enough oxygen, the conditions of these planets may be bearable to humans even without the protection of a space suit, provided that the atmosphere does not contain excessive toxic gases, but they would need to develop adaptations to the increased gravity, such as an increase in muscle and bone density."
== Life ==
Life on such planets should be much more diverse than on Earth. Flora can have absolutely any color of vegetation. Basically, in superhabitable worlds, vegetation should cover most of the planet, and the climate should be humid and hospitable to life
== On Space Engine ==
There is no "Superhabitable" planet type in Space Engine. But there are planets in the game that can fit into this category. Superhabitable world may not necessarily be terra, but also ferria, carbonia and aquaria
# https://en.wikipedia.org/wiki/Superhabitable_planet
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