The Wind spacecraft carries a Faraday Cup plasma detector built at MIT. The spacecraft was launched in 1994 and is now in a halo orbit about the L1 Lagrange point 200 Earth radii in front of the Earth. The instrument provides plasma densities, speeds, and temperatures for protons and alpha particles.
Group members: Alan Lazarus, John Richardson, Leslie Finck
Wind

Image: Faraday Cup plasma detector built at MIT

A nearby star is pummeling a companion planet with a barrage of X-rays a hundred thousand times more than the Earth receives from the Sun. Credit: NASA/CXC/NSF/IPAC/2MASS (see the 
