Ovanligt planetpar utmanar traditionella bildningsmodeller

7 maj 2026

Rapporterad av AI

Astronomer har identifierat ett sällsynt planetsystem 190 ljusår från jorden där en het Jupiter delar sin bana med en mini-Neptunus som befinner sig närmare stjärnan. Denna konfiguration ansågs tidigare nästan omöjlig. Nya observationer från James Webb-teleskopet ger färska insikter om hur planeterna bildades.

Systemet, som kretsar kring stjärnan TOI-1130, upptäcktes första gången 2020 med hjälp av data från NASA:s Transiting Exoplanet Survey Satellite. Mini-Neptunus fullbordar ett varv var fjärde dag, medan den heta Jupitern tar åtta dagar. Forskare har noterat att heta Jupitrar vanligtvis saknar närliggande följeslagare på grund av sin starka gravitationella påverkan.

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