By MARCIA DUNN, AP Aerospace Writer CAPE CANAVERAL, Florida (AP) — NASA's space snowman is revealing fresh secrets from its home far beyond Pluto. More than a year after its close encounter with the snowman-shaped object, the New Horizons spacecraft is still sending back data from more than 4 billion miles (6.4 billion kilometers) away. "The data rate is painfully slow from so far away," said Will