The rogue Earth-like planet started out as a temperate world with a thick atmosphere, oceans, and a variety of plant and animal life. However, due to its lack of internal radioactivity (such as the Earth's radioactive decay that keeps our planet's core warm), the planet gradually began to cool and freeze over. As the planet's core cooled, its magnetic field weakened, leaving it vulnerable to high levels of solar and cosmic radiation. This caused the atmosphere to slowly thin out, leaving the surface exposed to harsh temperatures and extreme weather conditions. Without the internal heat to sustain liquid water on the surface, the planet's oceans froze over, covering the once-lush landscape in ice and snow. The plant and animal life that had once thrived on the planet were unable to adapt to the rapidly changing conditions and eventually perished. Now, the frozen planet is a desolate and barren wasteland, devoid of life and warmth. The only signs of its former habitability are the frozen remnants of its once-vibrant ecosystem, preserved in ice for eternity.