Phaínōterra
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Phaínōterra

Dr. Sara Seager & Dr. Iaroslav Iakubivskyi
Distance from Proxima: 0.25 AU
Emergence of life: Half a billion years after formation, over an evolutionary timescale of about one billion years
Mass: 0.81⊕
Orbital Period: 56.62 Earth days
Planetary type: Terrestrial
Radius: 0.95⊕
Temperature: 383 K

Phaínōterra is a planet of light and wonder. Like Earth's blazing cousin, Venus, the planet is bathed in a yellowish-orange glow. Clouds clot its surface, offering fleeting glimpses of the mysterious world beneath. The planet's atmosphere sparkles with lightning storms. A dense haze often blankets the surface, sometimes ascending to dynamic air currents above. Towering mountains soar tens of kilometers into the sky.

Life here on Phaínōterra began in sulfuric acid pools supplied by fog, haze, and clouds. Acid pools react with surrounding rock, forming ionic liquid over the years. The meteoritic material that bombarded Phaínōterra billions of years ago seeded the life that now nestles on the mountain peaks above the planet's scorching surface. These life forms are microbial but exhibit a remarkable collective intelligence akin to ant colonies on Earth.

The planet's name is derived from the Greek phōs (light) and phainein (to reveal) and is linked to the phosphine Earth counterpart. On Phaínōterra life reveals itself, illuminating strange biochemical possibilities just beyond our doorstep.

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