Exosolar odd couple boosts idea of planetary migration

We’ve talked a little bit about planetary migration and how it might happen. For some reason, a good chunk of distant solar systems feature hot Jupiter’s, large enough that they may have formed in the frost belt, orbiting crazy close to their primary star.  Tidal deceleration, interaction and collision with other planets or smaller objects, detection bias? A new system worlds that could collide may offer clues: [Read more…]