Galaxy's Speed Through Universe Found to Exceed a Million M.P.H.
Univ of Calif scientists find Milky Way Galaxy from which solar system was born is hurtling thorough space at more than 1-million mph; arrive at conclusion after measuring movements of earth against 'glow' left from fireball from which universe was born; experiments performed by Drs Richard A Muller and George Smoot and graduate student Marc V Gorenstein; evidence is also uncovered suggesting that sun may be orbiting unobserved companion star; theory is based on unexplained behavior of some pulsars that lie near core of Milky Way; Univ of Mass scientist Dr Edward R Harrison comments (M)