[LesbianThespianGymnasticMidget]

Does an accretion disk resulting in two stars create more gas giants? I would think so. Gas giants are much easier to see just because of size of the light interruption when they transit the star(s).

[SunkenCiv]

Not to be difficult or anything, but stellar formation has never been seen, so the accretion disk is merely a hypothesis. :^)

My guess is, what we're seeing is the result of capture, and a binary star system would have a leg up on other systems to perform capture. OTOH, Jupiter's got loads of small moons, and many of them are in retrograde, considered diagnostic of capture.

[SunkenCiv]

Out of the 1776 X-Planets topics (and, may I say, wow), here are some that are probably already also on the Catastrophism list:

• supernova: "Similar Event Within 100 Light Years of Earth Would Be Catastrophic" --Astronomers... [2016]
• Stolen World: 'Planet 9' Likely Came from Another Star [2016]
• Planets Sometimes Blow Their Tops [2016]
• Wild new theory says Earth may actually be two different planets [2016]
• Young Jupiter wiped out solar system's early inner planets, study says [2015]
• Planetary wrecking balls: how Jupiter might have destroyed Earth [2012]
• Jupiter is melting, scientists say [2012]
• When straying Jupiter went on the pull [2012]
• Largest planet in the solar system could be about to be discovered (4x Jupiter) [2011]
• 'Jupiter swallowed planet 10 times the size of Earth' [2010]
• Neptune may have eaten a planet and stolen its moon [2010]
• Neptune Might Have Captured Triton [2006]
• Distant Sedna Raises Possibility of Another Earth-Sized Planet in Our Solar System [2004]
• New Theory: Catastrophe Created Mars' Moons [2003]
• Nemesis: Does the Sun Have a 'Companion'? [2003]
• Deadly Dance: Giant Planet Found Orbiting Huge Star [2003]
• Three-star system ejects weakest link [2003]