3 ms·

Are you aware of https://en.wikipedia.org/wiki/Conservation_of_energy https://en.wikipedia.org/wiki/Conservation_of_energy ?

• michaellee8 4y ago
  Actually I am thinking of the EMDrive thing now. Would that be possible?
  • blueflow 4y ago
    No. Fails to account for the conservation of momentum nor does provide an explanation for why it doesn't apply.
  • Beltiras 4y ago
    Isn't EMDrive thoroughly debunked by now?
  • simiones 4y ago
    The EMDrive thing was just measurement error. It's not providing any thrust.
• Rayhem 4y ago
  Conservation of energy doesn't torpedo this idea a priori. The "exhaust" mass would steal energy from the massive body/planet in the gravity assist. If you do this a million million times you might slow the planet down to where it has no more energy to usefully donate, but a one-off maneuver is negligible.