Magnetized-beam plasma propulsion, or MagBeam propulsion, could cut the time required for long journeys around the solar system from years to weeks. How can it do this? People usually think of a spacecraft as a ship with both payload and power source. The MagBeam system separates these two logical units; the power source stays in one place (for example, in permanent orbit around the Earth). Spacecraft are pushed to other parts of the solar system; the plasma beam also offers the potential for greater acceleration.