Assertion: asteroid belt's percent | /r/CapableOf | harbor such a compact asteroid
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text: Apparently, less than four percent of the observed systems may actually harbor such a compact asteroid belt."Based on our scenario, we should concentrate our efforts to look for complex life in systems that have a giant planet outside of the snow line," Livio said.
text: The team calculated that less than four percent of the observed systems may actually harbor such a compact asteroid belt.“Our study shows that only a tiny fraction of planetary systems observed to date seem to have giant planets in the right location to produce an asteroid belt of the appropriate size, offering the potential for life on a nearby rocky planet,” says Martin.