The WIND spacecraft, part of the ISTP program, was launched by NASA on 1 November 1994, to study the interplanetary medium and the effects of changes and disturbances in it upon the magnetosphere. Initially placed in a double-lunar-swing by orbit, which presently has a perigee of similar to 1.5 and an apogee of similar to 250 earth radii, the spacecraft may be inserted in 1997 into a halo orbit about the forward libration point, L1 where it will remain for at least a year. WIND carries modern instrumentation to measure the magnetic field, solar wind and hot plasma, energetic particles and low energy cosmic rays, plasma and radio waves and plasma composition, in addition to two Gamma-ray burst detectors. One of the Gamma-ray instruments is the first Russian instrument to fly on a US spacecraft. This paper describes the spacecraft and some new results in various disciplines. Published by Elsevier Science Ltd on behalf of COSPAR.