, and the planet's gravity starts to retain a significant atmosphere of hydrogen and helium.
The pieces are attracted, first electrostatically, then gravitationally. The more mass it gains, the faster it grows, until it's massive enough to trigger runaway accretion of hydrogen and helium, the lightest elements in the Universe, resulting in a massive gaseous envelope around a rocky core. Exoplanets that experience a cold start or a hot start should cool at different rates, producing distinct characteristics that we should be able to observe.
it may also be a starspot, falls within the cluster of 'exoplanets' with a radius linearly correlated with host star mass. More data is needed.
We shall call it Thwompius
HD114082b is a gas giant exoplanet that orbits an F-type star. Its mass is 8 Jupiters, it takes 109.8 days to complete one orbit of its star, and is 0.5109 AU from its star. Its discovery was announced in 2022. NASAExoplanets
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