Talk:Iron planet

Could there be iron extrasolar moons?

One question that has interested me is whether hot Jupiters or eccentric Jupiters might have moons that are iron-rich like Mercury.

The reason I am curious about this question is that logically a planet closer to its star would have denser moons - in our own Solar System Jupiter has two “telluric” moons in Io and Europa, whereas more distant Saturn, Uranus and Neptune do not have any “telluric” moons, presumably because there was too little rocky material to form a telluric body even the size of Pluto. Thus, a gas giant orbiting closer to its star than Jupiter should have moons of higher density (but smaller radius perhaps) than Io or Europa, and a Mercury-like (though probably smaller) body is the logical type one would expect. luokehao, 15 January 2011 11:34 UTC

Marius calling Io "the Mercury of Jupiter" does seem to have been uncannily prescient... Double sharp (talk) 02:35, 5 August 2021 (UTC)[reply]

Should this even be an article?

This isn't a distinct category of planet - it's just terrestrial planets with a high proportion of iron, no a significant separate variety of planet with some distinct formation process or properties. The content of this article could be adequately covered in the terrestrial planet article. 5.69.196.64 (talk) 13:47, 21 April 2013 (UTC)[reply]