|        |     Spirals in Dust Around Young Stars May Betray Presence of Massive Planets      A team of astronomers is proposing that huge spiral patterns seen around some   newborn stars, merely a few million years old (about one percent our sun's age), may   be evidence for the presence of giant, unseen planets. This idea not only opens the door   to a new method of planet detection, but also could offer a look into the early formative   years of planet birth. Though astronomers have cataloged thousands of planets orbiting   other stars, the very earliest stages of planet formation are elusive because nascent   planets are born and embedded inside vast, pancake-shaped disks of dust and gas   encircling newborn stars. The conclusion that planets may betray their presence by   modifying circumstellar disks on large scales is based on detailed computer modeling of   how gas-and-dust disks evolve around newborn stars.         This news release and its supporting materials are permanently achived at: http://hubblesite.org/newscenter/archive/releases/2015/40/  |        |     
    
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