Edit: guys I didn’t made this template, can you please calm down?

  • p1mrx@sh.itjust.works
    2·
    9 months ago

    I would say, anything whose spacetime geodesic (orbital/freefall path) intersects the spheroid defined by the surface of the Earth. Though by this definition, a comet on a 100-year collision course is already “on Earth”, so I’m not sure if that’s reasonable.