‘Blue Binaries’ Argue for Smooth Neptune Migration
5 Apr 2017, 17:10 UTC
Gemini Observatory/AURA, artwork by Joy Pollard.
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We’re getting a few clues about the nature of planet migration in the early Solar System thanks to a class of objects being described as ‘blue binaries.’ Cold Classical Kuiper Belt Objects (CCKBOs) are generally reddish, but a population of widely separated binaries has now been identified that is thought to have originated in the inner edges of the Kuiper Belt.
