New simulation shows disk anomalies around stars may not be planets after all

(Phys.org) —Two researchers affiliated with several research centers in the U.S. have built a computer simulation that casts doubt on the claim of many recent exoplanet discoveries. In their paper published in the journal Nature, Wladimir Lyra and Marc Kuchner describe how they added gas to debris disks in their simulations and found irregularities similar to those found around real stars. This means, the researchers explain, that not all disk cluster irregularities are caused by planets.

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