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Description
The habitable zone of this star system contains a double planet. The big one (on the sky) is just a little bit bigger than Mars with 0.38 g of surface gravity and the small one (that we are standing on) is Mercury sized with 0.27 g of surface gravity.
The small one had thin atmosphere and no water due to its mass and the lacks of strong magnetic field. We had introduced selective force fields to the entire planet to protect and pressurize the atmosphere we were creating. The force fields also don't let electromagnetic waves those have shorter wavelength than violet light to come in (UV ray from the force fields is already high). This planet became a beachy planet for vacation with 95% water area. The ocean is so shallow that the deepest point is just 1.8 km. Giant coral reeves are everywhere. The water is densely filled with alien cyan phytoplankton-like, give the sea extremely vibrant teal color. Sometimes almost neon-looking since they are very fluorescent under UV. Land plants and plant-like organisms were derived from many planets but heavy engineered and sometimes, some places they need constant maintenance by ecobots for stable ecology. This also applied to ocean ecology.
This world also had no harmful predators and venomous lifeform (to human).

The big one is in the last stage of life seeding but it's already quite habitable for a while. The population is around 1.6 billion right now.

Description
The habitable zone of this star system contains a double planet. The big one (on the sky) is just a little bit bigger than Mars with 0.38 g of surface gravity and the small one (that we are standing on) is Mercury sized with 0.27 g of surface gravity.
The small one had thin atmosphere and no water due to its mass and the lacks of strong magnetic field. We had introduced selective force fields to the entire planet to protect and pressurize the atmosphere we were creating. The force fields also don't let electromagnetic waves those have shorter wavelength than violet light to come in (UV ray from the force fields is already high). This planet became a beachy planet for vacation with 95% water area. The ocean is so shallow that the deepest point is just 1.8 km. Giant coral reeves are everywhere. The water is densely filled with alien cyan phytoplankton-like, give the sea extremely vibrant teal color. Sometimes almost neon-looking since they are very fluorescent under UV. Land plants and plant-like organisms were derived from many planets but heavy engineered and sometimes, some places they need constant maintenance by ecobots for stable ecology. This also applied to ocean ecology.
This world also had no harmful predators and venomous lifeform (to human).

The big one is in the last stage of life seeding but it's already quite habitable for a while. The population is around 1.6 billion right now.