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Ringed Super-Earth by LEXLOTHOR Ringed Super-Earth by LEXLOTHOR
More of my astronomical and space travel art can be seen in my DA "Space Art" gallery:…

This is a "super-earth", a rocky planet larger than the Earth yet smaller than ice giants such as Neptune. I suspect that most of the super-earths out there might better be described as super-Venuses. The larger mass would have the planet hold onto a denser atmosphere. Gravitational compression might result in a planet that radiates more energy than it receives from its sun. A true super-earth would probably only exist at the outer edge of the Goldilocks zone. In our Solar System that would be at the distance from the sun that Mars occupies. Any closer and it might be so hot that water would boil away into vapor. It may be possible that habitable super-earths could exist beyond the Goldilocks zone or ice line due heating caused by atmospheric pressure.

This hypothetical planet has a metallic core and a rocky mantle. Its rocky surface is entirely covered in vastly deep world-wide ocean. It is entirely possible that all super-earths capable of sustaining multicellular life have no continents. Continents are made of granite which is much less dense than basaltic ocean crust. Granite is like the bubbles in champagne. If the cork is kept on the bottle the bubbles never rise. Likewise with a strong gravitational gradient, a planet's crust may not be able to differentiate lighter granite. Only broad shield volcanoes such as those on Mars could rise above the ocean floor.

The colors of its polar aurorae indicate the presence of oxygen and nitrogen in the atmosphere. This indicates the existence of photosynthesizing life at the surface of the ocean. The cloud systems form permanent bands of weather belts that transfer atmospheric heat from the equator to the poles. This world has an axial tilt. In this scene it is summer in the northern hemisphere.

It is like that a great many super-earths will have ring systems. Sunward of the parent star's ice line these would only consist of rock, dust or organics. Consequently they would have profoundly less albedo than planets with ice rings.
art & text (c) me

2.5" x 3.5" art card rendered in Prismacolor pencils, Tombow markers & acrylics
BorisFedorov Featured By Owner Jun 5, 2015  Hobbyist General Artist
Well I say that would be a site if it where a real planet.
Ouroboros-491 Featured By Owner Jun 2, 2015
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Submitted on
June 2, 2015
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