Another example of uncertainty. What happens "when" (not if) a large cometary (fast moving planet) collides with a Sun: Say we are talking of around 100 km per sec & planet sizes are earth size up to 10 times J.
Wouldn't this be a simpler explanation of how large gas gaint form near a the Sun? Could this have happenned even in our system billions of years ago?
What's the chance of a Gas gaint migrating close a Sun yet not simply continue on into the Sun in the next couple million years. A large bulk of planetary mass is in the Oort cloud why do we assume that there wasn't significantly more mass in the distant past. Gas gaint could form in the outer reaches of system, come into the inner system collide with sun which then ejects mass which then reform into gas gaints which then may spiral into the sun or migrate outward, or remain fairly stable (until another big cometary mass hit it or the nearby Sun)
Space/Science » in reply to Re: Rare Earths
Re: Rare Earths