But for planetary systems , the active star-forming region can present a hazardous and inhospitable birthplace. In each case , a central young star is surrounded by a disk substantially wider than our solar system. The disks likely contain material in the process of planet formation. Planet formation must occur quickly here, if at all. Researchers estimate that about 90 percent of Orion's youngest protoplanetary disks will not survive the next 100,000 years.
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