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.
technically, airplanes aren’t on earth whilst being fast,
Technically, Neptune, Uranus, Saturn, and Jupiter aren’t planets, just clouds really far away
Actually, the gas giants do have a solid core
Which one has cloud city again?
Bespin… ahhhhhhhhhhhhhh! You got me!
Technically, it is if you count atmosphere as part of earth
you matter. light energy.
What defines being on earth? Below the atmosphere? stratosphere? Being in contact with the ground? Being more than 10m up?
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.
Hahaha, well played good sir/madam
In that case, technically the light isn’t either