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The tidal downsizing hypothesis for planet formation and the composition of Solar system comets
Monthly Notices of the Royal Astronomical Society: Letters
Comets are believed to be born in the outer Solar System where the temperature is assumed to have never exceeded T ~ 100 K. Surprisingly, observations and samples of cometary dust particles returned to Earth showed that they are in fact made of a mix of ices, as expected, but also of materials forged at high-temperatures (T ~ 1500 K). We propose a radically new view regarding the origin of the high-temperature processed materials in comets, based on the recent "Tidal Downsizing" (TD) hypothesisdoi:10.1111/j.1745-3933.2011.01095.x fatcat:grog526xend4hjswow2vupuihe