Earth

From Tetro Files

Earth is a terrestrial planet located in the Orion Arm of the Milky Way Galaxy in the Virgo Galaxy Cluster. It is roughly 27,120 light-years from the galactic core. It exists within the same causally-interconnected universe as Tetro, but it is 22.5 billion light-years away, placing it 4.5 billion light-years outside Tetro's visible universe. 78% of Earth's surface is covered in water, and it has an atmosphere composed of hydrogen, nitrogen, oxygen, and helium. It has a diameter of 3,963.2 miles and is the only planet apart from Tetro known to support life.