... PLANETSSaturn looms over Titan’s cloudsQUARTERLY $4.95 DISPLAY UNTIL MAY 31, 1998 MAGNIFICENT SCIENTIFIC AMERICAN MAGNIFICENT COSMOS Quarterly Volume 9, Number 1Copyright 1998 Scientific American, ... years—and perhaps as little as 100 million to 200 mil-Copyright 1998 Scientific American, Inc. Magnificent Cosmos 17Searching for Life in Our Solar Systemlion years—passed before life rooted ... that life would require to takehold. Only Io, also a Galilean satellite, has volcanic heat—yet Magnificent Cosmos 19Searching for Life in Our Solar SystemIn 1984, surveying the Far WesternIcefield...