Energetic neutral atom Energetic neutral atom Energetic neutral atom (ENA) imaging, often described as "seeing with atoms", is a technology used to create global images of otherwise invisible phenomena in the magnetospheres of planets and throughout the heliosphere, even to its outer boundary. This constitutes the far-flung edge of the solar system. The solar wind consists of ripped-apart atoms (called plasma) flying out of the Sun. This is mostly hydrogen, that is, bare electrons and protons, with a little bit of other kinds of nuclei, mostly helium. The space between solar systems is similar, but they come from other stars in our galaxy.
Sun Stream not compete again. In their book, "A Century of Champions", based on the Timeform rating system, John Randall and Tony Morris rated Sun Stream a "superior" winner of the 1000 Guineas and Oaks and the twenty-fifth best filly trained in Britain or Ireland in the 20th century. Sun Stream retired from racing to become a broodmare at her owner's stud. She produced four minor winners, but nothing of top class. Through her daughter Riviera, she was the female ancestor of the Champion Hurdler Collier Bay. Sun Stream was euthanised in January 1959. Sun Stream Sun Stream (1942 – January 1959)