제 목    HKNFVAvBzhZ 이 름    Tomas 날 짜    2018/06/28 조 회    1 I'm a partner in www.zantemedcare.gr According to the core-accretion model, the standard model for large-planet formation, Jupiter-like planets begin in a gas-rich disk of debris that rings a new star. Once a core of asteroid debris accumulates enough mass, its gravitational pull can tug in more and more gas from the disk. And the end of that process is a gas giant.