Magnetic sail significant in the long term. In typical magnetic sail designs, the magnetic field is generated by a loop of superconducting wire. Because loops of current-carrying conductors tend to be forced outwards towards a circular shape by their own magnetic field, the sail could be deployed simply by unspooling the conductor and applying a current through it. The solar wind is a continuous stream of plasma that flows outwards from the Sun: near the Earth's orbit, it contains several million protons and electrons per cubic meter and flows at . The magnetic sail introduces a magnetic field into this plasma flow
Sun Stream were rescheduled to new dates and venues, often at short notice, and all five of the Classics were run at Newmarket. As a two-year-old in 1944, Sun Stream was among the best of her generation. She won the Bedford Stakes over five furlongs at Newmarket in spring and then moved up in class for the Queen Mary Stakes in June. The race, traditionally part of the Royal Ascot meeting, was run at Newmarket from 1941 to 1944. Ridden by Harry Wragg, she won the race at odds of 100/30. In autumn, Sun Stream ran in the six furlong Cheveley Park