![]() “This is a major breakthrough because it establishes that finding wide-separation exoplanets around a massive host star is possible,“ says Meiji Nguyen at the University of California, Berkeley. These are important insights for our limited understanding of planet formation around high-mass stars. This suggests that b Cen (AB)b was formed close to its current orbit, because planets that have been knocked off their original orbits typically follow an elliptical path around their star. ![]() ![]() They also found the planet to have a reasonably circular orbit. Even at the distance it lies from the stars, the disc of material this planet formed from would have been likely to evaporate quickly. This method is much faster than the traditional core accretion model, which is when solid particles collide and slowly snowball into a planet. The researchers suggest that the planet must have formed relatively rapidly through gravitational instability, which is when massive clumps of gas and dust cool and contract into a planet.
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