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Trajectories are reversible. So if you had a spacecraft heading into the solar system at the same velocity that NH is currently heading out, it would follow the same trajectory but in reverse. If you time things correctly, it could narrowly miss Jupiter and be deflected into a solar orbit which could then hit the Earth and it would reenter at the same ...


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Could a spacecraft fly in a direct line from the outer solar system to Earth? Ignoring tiny deviations due to long-range attraction to the larger planets, sure! absolutely! no problem! you betcha! And you will need zero propulsion to do it. Sit back and enjoy the ride! At the right time of year you can position yourself at say 100 AU from the Sun in the ...


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Theoretically: Yes If the net force on an object is zero, then Newton's 1st Law says that it will continue in a straight line. By continually adjusting the amount and direction of your thrust, so that the thrust cancels out the force of the Sun's gravity, you can do just that. Practically: No Doing the above takes ridiculous amounts of energy -- which in ...


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