A NASA spacecraft rocketed away Monday on a quest to explore Jupiter's tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life.
It will take Europa Clipper 5 1/2 years to reach Jupiter, where it will slip into orbit around the giant gas planet and sneak close to Europa during dozens of radiation-drenched flybys.
Scientists are almost certain a deep, global ocean exists beneath Europa's icy crust . And where there is water, there could be life, making the moon one of the most promising places out there to hunt for it.
Europa Clipper won't look for life it has no life detectors. Instead, the spacecraft will zero in on the ingredients necessary to sustain life, searching for organic compounds and other clues as it peers beneath the ice for suitable conditions.
"Ocean worlds like Europa are not only unique because they might be habitable, but they might be habitable today," NASA's Gina DiBraccio said on the eve of launch.
