The Solar System is a gravitationally bound star system. One galaxy is known as the Milky Way where one yellow star is inhabited, famously known as the Sun, with a total of eight planets; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has satellites, which are known as Moons.
In 2009, everything in the Solar System was completely normal until the eight planets of the Solar System aligned themselves, with a massive solar flare erupting from the Sun, releasing an unprecedented amount of neutrinos through the Solar System. Earth, the third planet from the Sun, was hit by the solar flare but protected by its magnetic field. However, due to the alignment of the planets and the neutrinos from the solar flare heating up the Earth's core, it caused a cataclysmic event to occur on Earth, resulting in the planet coming to an end after its crust became unstable.