Yet our Earth is — literally —more than a million times larger than us in all three dimensions: a nearly perfect sphere more than 10,000 kilometers in diameter.
But what we have access to is so much more than just the Earth. Just going another factor of a million larger than Earth — in all dimensions, again — we encompass all the bodies we know of in the Solar System. The Sun, all the planets, moons, asteroids, comets, centaurs and man-made probes are contained within a sphere of 10^10 km, a million times larger than the size of the Earth in every direction.
Spike Aerospace, a Boston engineering firm that’s developing a small supersonic jet, recently caused a stir when it announced its plane wouldn’t have any windows in the passenger cabin. Instead, thin screens installed on the walls of the aircraft would display live views captured by cameras mounted outside.
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