El Maximo writes:

Nope. Orbits are not science fiction. They really do exist.

Standard orbits for interplanetary spacecraft that can exceed the speed of
light are science fiction.

That big round thing in
the sky (most of us call it the moon, but you tend to make up your own
definitions, so I don't know what you call it) is "in orbit" around the
earth.

No, it's not. Both the Earth and Moon orbit the Sun; the Moon does not orbit
the Earth. If you don't believe me, plot the paths of the Earth and Moon
around the Sun to scale, and you'll see that the Earth never accelerates the
Moon away from the Sun. That's because it's actually in orbit around the Sun,
along with the Earth; they form a binary planet, the only one of its kind in
our planetary system.