It makes much more sense to assume you’d stay on earth, bound by its gravity while time-traveling, than to magically lose all your momentum during the transition and stop in space.
The Earth is traveling along an elliptical orbit around the sun, the sun is orbiting the Milky Way, the Milky Way is traveling along a curved trajectory. Why, if you kept your momentum, would you end up on Earth?
It makes much more sense to assume you’d stay on earth, bound by its gravity while time-traveling, than to magically lose all your momentum during the transition and stop in space.
The Earth is traveling along an elliptical orbit around the sun, the sun is orbiting the Milky Way, the Milky Way is traveling along a curved trajectory. Why, if you kept your momentum, would you end up on Earth?