Early planets formed more easily
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protoplanetary diskSpace
•Hubble's 'impossible' planet explained? Gas giants may have formed fast in early universe
76% Informative
James Webb Space Telescope has found evidence that planet-forming disks can survive even when they contain relatively few heavy elements.
This suggests planet formation was possible early in the universe's history, even if we don't fully understand how it happened yet.
The planet formed 12.7 billion years ago and is the oldest exoplanet known by far.
Heavy-element-poor disks could therefore last longer.
In a nebula lacking heavy elements, it becomes harder for a gas cloud to collapse into a star.
Larger clouds would result in larger disks carrying more mass, and that mass would take longer for the star's radiation to shift.
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